ar9170usb slow / poor performance
I have 2 USB wireless dongles:
- Generic Realtek RTL8187 using rtl8187 driver
- Netgear WN111v2 [Atheros AR9001-U(2)NG] using ar9170usb driver
Performance of the Netgear has degraded severely since updating to Arch Linux kernel 2.6.36.1-3 from 2.6.35.4-2, also reported by http://article.gmane.org/gmane.linux.kernel.wireless.general/59911
Note that I only installed and enabled wlan1 because wlan0 was performing so badly.
# lsusb -v -d 0bda:8187
Bus 002 Device 005: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0bda Realtek Semiconductor Corp. idProduct 0x8187 RTL8187 Wireless Adapter bcdDevice 1.00 iManufacturer 1 Manufacturer_Realtek_RTL8187_ iProduct 2 RTL8187_Wireless_LAN_Adapter iSerial 3 001AEF0050E6 bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 Wireless Network Card
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 0 (Defined at Interface level)
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 Bulk-IN,Bulk-OUT,Bulk-OUT
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
# lsusb -v -d 0846:9001
Bus 002 Device 004: ID 0846:9001 NetGear, Inc. WN111(v2) RangeMax Next Wireless [Atheros AR9001U-(2)NG] Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
idVendor 0x0846 NetGear, Inc.
idProduct 0x9001 WN111(v2) RangeMax Next Wireless [Atheros
AR9001U-(2)NG]
bcdDevice 1.06
iManufacturer 16 ATHER iProduct 32 USB2.0 WLAN iSerial 48 12345
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 46
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 4
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
# iwconfig lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point:
00:22:3F:07:42:F3
Bit Rate=117 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=34/70 Signal level=-76 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
wlan1 IEEE 802.11bg ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point:
00:22:3F:07:42:F3
Bit Rate=36 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=44/70 Signal level=-66 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
tun0 no wireless extensions.
My network looks like this:
Linux Router/AP DSL Modem
(wlan0) 192.168.1.57 ---/--- 192.168.1.1 --- 192.168.0.1 --- Internet (wlan1) 192.168.1.4 ---/---
Between the router and the modem is an ethernet crossover cable.
# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.23 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.11 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.88 ms ^C --- 192.168.0.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 1.882/2.076/2.235/0.146 ms
# route add -host 192.168.0.1 gw 192.168.1.1 dev wlan0
# netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.0.1 192.168.1.1 255.255.255.255 UGH 0 0 0 wlan0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan1
# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=158 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=168 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=162 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=5 ttl=63 time=178 ms 64 bytes from 192.168.0.1: icmp_seq=6 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=7 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=8 ttl=63 time=155 ms 64 bytes from 192.168.0.1: icmp_seq=9 ttl=63 time=434 ms 64 bytes from 192.168.0.1: icmp_seq=10 ttl=63 time=154 ms 64 bytes from 192.168.0.1: icmp_seq=11 ttl=63 time=174 ms 64 bytes from 192.168.0.1: icmp_seq=12 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=13 ttl=63 time=147 ms 64 bytes from 192.168.0.1: icmp_seq=14 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=15 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=16 ttl=63 time=190 ms 64 bytes from 192.168.0.1: icmp_seq=17 ttl=63 time=218 ms 64 bytes from 192.168.0.1: icmp_seq=18 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=19 ttl=63 time=514 ms 64 bytes from 192.168.0.1: icmp_seq=20 ttl=63 time=177 ms 64 bytes from 192.168.0.1: icmp_seq=21 ttl=63 time=144 ms 64 bytes from 192.168.0.1: icmp_seq=22 ttl=63 time=191 ms 64 bytes from 192.168.0.1: icmp_seq=23 ttl=63 time=175 ms 64 bytes from 192.168.0.1: icmp_seq=24 ttl=63 time=156 ms 64 bytes from 192.168.0.1: icmp_seq=25 ttl=63 time=947 ms 64 bytes from 192.168.0.1: icmp_seq=26 ttl=63 time=1833 ms 64 bytes from 192.168.0.1: icmp_seq=27 ttl=63 time=2196 ms 64 bytes from 192.168.0.1: icmp_seq=28 ttl=63 time=1542 ms 64 bytes from 192.168.0.1: icmp_seq=29 ttl=63 time=816 ms 64 bytes from 192.168.0.1: icmp_seq=30 ttl=63 time=3045 ms 64 bytes from 192.168.0.1: icmp_seq=31 ttl=63 time=3181 ms 64 bytes from 192.168.0.1: icmp_seq=32 ttl=63 time=2287 ms 64 bytes from 192.168.0.1: icmp_seq=33 ttl=63 time=1496 ms 64 bytes from 192.168.0.1: icmp_seq=34 ttl=63 time=687 ms 64 bytes from 192.168.0.1: icmp_seq=35 ttl=63 time=173 ms ^C --- 192.168.0.1 ping statistics --- 35 packets transmitted, 35 received, 0% packet loss, time 34037ms rtt min/avg/max/mdev = 144.678/653.604/3181.758/855.953 ms, pipe 4
NOTE --- The higher ping times occurred when downloading a 39kB image file.
# route del -host 192.168.0.1 gw 192.168.1.1 dev wlan0
# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.37 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.10 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.96 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=2.38 ms ^C --- 192.168.0.1 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 1.964/2.206/2.388/0.187 ms
I have also tried using the carl9170 driver (2010_12_02) with compat-wireless and carl9170-fw (1.9.1-1) but I found 'iwconfig' would segfault when it tried to display ath0.
Can somebody help me debug it further please?
Quoted 301 lines · Wade Fitzpatrick
I have 2 USB wireless dongles:
- Generic Realtek RTL8187 using rtl8187 driver
- Netgear WN111v2 [Atheros AR9001-U(2)NG] using ar9170usb driverPerformance of the Netgear has degraded severely since updating to Arch Linux kernel 2.6.36.1-3 from 2.6.35.4-2, also reported by
http://article.gmane.org/gmane.linux.kernel.wireless.general/59911Note that I only installed and enabled wlan1 because wlan0 was performing so badly.
# lsusb -v -d 0bda:8187Bus 002 Device 005: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor0x0bdaRealtek Semiconductor Corp. idProduct 0x8187 RTL8187 Wireless Adapter bcdDevice 1.00
iManufacturer 1Manufacturer_Realtek_RTL8187_iProduct 2RTL8187_Wireless_LAN_AdapteriSerial 3 001AEF0050E6 bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 Wireless Network Card bmAttributes0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 0 (Defined at Interface level) bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 Bulk-IN,Bulk-OUT,Bulk-OUT Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x81EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize0x02001x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x02EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize0x02001x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x03EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize0x02001x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status:0x0000
(Bus Powered)# lsusb -v -d 0846:9001Bus 002 Device 004: ID 0846:9001 NetGear, Inc. WN111(v2) RangeMax Next Wireless [Atheros AR9001U-(2)NG]
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol bMaxPacketSize0 64
idVendor0x0846NetGear, Inc.
idProduct 0x9001 WN111(v2) RangeMax Next Wireless [Atheros AR9001U-(2)NG]
bcdDevice 1.06
iManufacturer 16 ATHER
iProduct 32 USB2.0 WLAN
iSerial 48 12345
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 46
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 4
bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x01EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize0x02001x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x82EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize0x02001x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x83EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize0x00401x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress0x04EP 4 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize0x00401x 64 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol bMaxPacketSize0 64
bNumConfigurations 1
Device Status:0x0000
(Bus Powered)# iwconfig lo no wireless extensions.eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3 Bit Rate=117 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off
Power Management:off
Link Quality=34/70 Signal level=-76 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0wlan1 IEEE 802.11bg ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3 Bit Rate=36 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off
Power Management:off
Link Quality=44/70 Signal level=-66 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0tun0 no wireless extensions.
My network looks like this:
Linux Router/AP DSL Modem (wlan0) 192.168.1.57 ---/--- 192.168.1.1 --- 192.168.0.1 --- Internet (wlan1) 192.168.1.4 ---/---
Between the router and the modem is an ethernet crossover cable.
# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.23 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.11 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.88 ms ^C --- 192.168.0.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 1.882/2.076/2.235/0.146 ms# route add -host 192.168.0.1 gw 192.168.1.1 dev wlan0# netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.0.1 192.168.1.1 255.255.255.255 UGH 0 0 0 wlan0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan1# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=158 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=168 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=162 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=5 ttl=63 time=178 ms 64 bytes from 192.168.0.1: icmp_seq=6 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=7 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=8 ttl=63 time=155 ms 64 bytes from 192.168.0.1: icmp_seq=9 ttl=63 time=434 ms 64 bytes from 192.168.0.1: icmp_seq=10 ttl=63 time=154 ms 64 bytes from 192.168.0.1: icmp_seq=11 ttl=63 time=174 ms 64 bytes from 192.168.0.1: icmp_seq=12 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=13 ttl=63 time=147 ms 64 bytes from 192.168.0.1: icmp_seq=14 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=15 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=16 ttl=63 time=190 ms 64 bytes from 192.168.0.1: icmp_seq=17 ttl=63 time=218 ms 64 bytes from 192.168.0.1: icmp_seq=18 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=19 ttl=63 time=514 ms 64 bytes from 192.168.0.1: icmp_seq=20 ttl=63 time=177 ms 64 bytes from 192.168.0.1: icmp_seq=21 ttl=63 time=144 ms 64 bytes from 192.168.0.1: icmp_seq=22 ttl=63 time=191 ms 64 bytes from 192.168.0.1: icmp_seq=23 ttl=63 time=175 ms 64 bytes from 192.168.0.1: icmp_seq=24 ttl=63 time=156 ms 64 bytes from 192.168.0.1: icmp_seq=25 ttl=63 time=947 ms 64 bytes from 192.168.0.1: icmp_seq=26 ttl=63 time=1833 ms 64 bytes from 192.168.0.1: icmp_seq=27 ttl=63 time=2196 ms 64 bytes from 192.168.0.1: icmp_seq=28 ttl=63 time=1542 ms 64 bytes from 192.168.0.1: icmp_seq=29 ttl=63 time=816 ms 64 bytes from 192.168.0.1: icmp_seq=30 ttl=63 time=3045 ms 64 bytes from 192.168.0.1: icmp_seq=31 ttl=63 time=3181 ms 64 bytes from 192.168.0.1: icmp_seq=32 ttl=63 time=2287 ms 64 bytes from 192.168.0.1: icmp_seq=33 ttl=63 time=1496 ms 64 bytes from 192.168.0.1: icmp_seq=34 ttl=63 time=687 ms 64 bytes from 192.168.0.1: icmp_seq=35 ttl=63 time=173 ms ^C --- 192.168.0.1 ping statistics --- 35 packets transmitted, 35 received, 0% packet loss, time 34037ms rtt min/avg/max/mdev = 144.678/653.604/3181.758/855.953 ms, pipe 4NOTE --- The higher ping times occurred when downloading a 39kB image file.
# route del -host 192.168.0.1 gw 192.168.1.1 dev wlan0# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.37 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.10 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.96 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=2.38 ms ^C --- 192.168.0.1 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 1.964/2.206/2.388/0.187 ms
Quoted 3 lines
I have also tried using the carl9170 driver (2010_12_02) with compat-wireless and carl9170-fw (1.9.1-1) but I found 'iwconfig' would segfault when it tried to display ath0.
Can you please try with ath9k driver with the same compat wireless.Are you still seeing poor performance?
Quoted 7 lines
Can somebody help me debug it further please?
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Quoted 303 lines · Mohammed Shafi
Quoted 301 lines · Wade Fitzpatrick
I have 2 USB wireless dongles:
?- Generic Realtek RTL8187 using rtl8187 driver
?- Netgear WN111v2 [Atheros AR9001-U(2)NG] using ar9170usb driverPerformance of the Netgear has degraded severely since updating to Arch Linux kernel 2.6.36.1-3 from 2.6.35.4-2, also reported by
http://article.gmane.org/gmane.linux.kernel.wireless.general/59911Note that I only installed and enabled wlan1 because wlan0 was performing so badly.
# lsusb -v -d 0bda:8187Bus 002 Device 005: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
Device Descriptor:
?bLength ? ? ? ? ? ? ? ?18
?bDescriptorType ? ? ? ? 1
?bcdUSB ? ? ? ? ? ? ? 2.00
?bDeviceClass ? ? ? ? ? ?0 (Defined at Interface level) ?bDeviceSubClass ? ? ? ? 0
?bDeviceProtocol ? ? ? ? 0
?bMaxPacketSize0 ? ? ? ?64
?idVendor ? ? ? ? ?0x0bdaRealtek Semiconductor Corp. ?idProduct ? ? ? ? ?0x8187 RTL8187 Wireless Adapter ?bcdDevice ? ? ? ? ? ?1.00
?iManufacturer ? ? ? ? ? 1Manufacturer_Realtek_RTL8187_?iProduct ? ? ? ? ? ? ? ?2RTL8187_Wireless_LAN_Adapter?iSerial ? ? ? ? ? ? ? ? 3 001AEF0050E6 ?bNumConfigurations ? ? ?1
?Configuration Descriptor:
? ?bLength ? ? ? ? ? ? ? ? 9
? ?bDescriptorType ? ? ? ? 2
? ?wTotalLength ? ? ? ? ? 39
? ?bNumInterfaces ? ? ? ? ?1
? ?bConfigurationValue ? ? 1
? ?iConfiguration ? ? ? ? ?4 Wireless Network Card
? ?bmAttributes ? ? ? ?0x80
? ? ?(Bus Powered)
? ?MaxPower ? ? ? ? ? ? ?500mA
? ?Interface Descriptor:
? ? ?bLength ? ? ? ? ? ? ? ? 9
? ? ?bDescriptorType ? ? ? ? 4
? ? ?bInterfaceNumber ? ? ? ?0
? ? ?bAlternateSetting ? ? ? 0
? ? ?bNumEndpoints ? ? ? ? ? 3
? ? ?bInterfaceClass ? ? ? ? 0 (Defined at Interface level) ? ? ?bInterfaceSubClass ? ? ?0
? ? ?bInterfaceProtocol ? ? ?0
? ? ?iInterface ? ? ? ? ? ? ?5 Bulk-IN,Bulk-OUT,Bulk-OUT ? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x81?EP 1 IN
? ? ? ?bmAttributes ? ? ? ? ? ?2
? ? ? ? ?Transfer Type ? ? ? ? ? ?Bulk
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0200?1x 512 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 0
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x02?EP 2 OUT
? ? ? ?bmAttributes ? ? ? ? ? ?2
? ? ? ? ?Transfer Type ? ? ? ? ? ?Bulk
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0200?1x 512 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 0
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x03?EP 3 OUT
? ? ? ?bmAttributes ? ? ? ? ? ?2
? ? ? ? ?Transfer Type ? ? ? ? ? ?Bulk
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0200?1x 512 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 0
Device Qualifier (for other device speed):
?bLength ? ? ? ? ? ? ? ?10
?bDescriptorType ? ? ? ? 6
?bcdUSB ? ? ? ? ? ? ? 2.00
?bDeviceClass ? ? ? ? ? ?0 (Defined at Interface level) ?bDeviceSubClass ? ? ? ? 0
?bDeviceProtocol ? ? ? ? 0
?bMaxPacketSize0 ? ? ? ?64
?bNumConfigurations ? ? ?1
Device Status: ? ?0x0000
?(Bus Powered)# lsusb -v -d 0846:9001Bus 002 Device 004: ID 0846:9001 NetGear, Inc. WN111(v2) RangeMax Next Wireless [Atheros AR9001U-(2)NG]
Device Descriptor:
?bLength ? ? ? ? ? ? ? ?18
?bDescriptorType ? ? ? ? 1
?bcdUSB ? ? ? ? ? ? ? 2.00
?bDeviceClass ? ? ? ? ?255 Vendor Specific Class ?bDeviceSubClass ? ? ? 255 Vendor Specific Subclass ?bDeviceProtocol ? ? ? 255 Vendor Specific Protocol ?bMaxPacketSize0 ? ? ? ?64
?idVendor ? ? ? ? ?0x0846NetGear, Inc.
?idProduct ? ? ? ? ?0x9001 WN111(v2) RangeMax Next Wireless [Atheros AR9001U-(2)NG]
?bcdDevice ? ? ? ? ? ?1.06
?iManufacturer ? ? ? ? ?16 ATHER
?iProduct ? ? ? ? ? ? ? 32 USB2.0 WLAN
?iSerial ? ? ? ? ? ? ? ?48 12345
?bNumConfigurations ? ? ?1
?Configuration Descriptor:
? ?bLength ? ? ? ? ? ? ? ? 9
? ?bDescriptorType ? ? ? ? 2
? ?wTotalLength ? ? ? ? ? 46
? ?bNumInterfaces ? ? ? ? ?1
? ?bConfigurationValue ? ? 1
? ?iConfiguration ? ? ? ? ?0
? ?bmAttributes ? ? ? ?0x80
? ? ?(Bus Powered)
? ?MaxPower ? ? ? ? ? ? ?500mA
? ?Interface Descriptor:
? ? ?bLength ? ? ? ? ? ? ? ? 9
? ? ?bDescriptorType ? ? ? ? 4
? ? ?bInterfaceNumber ? ? ? ?0
? ? ?bAlternateSetting ? ? ? 0
? ? ?bNumEndpoints ? ? ? ? ? 4
? ? ?bInterfaceClass ? ? ? 255 Vendor Specific Class
? ? ?bInterfaceSubClass ? ? ?0
? ? ?bInterfaceProtocol ? ? ?0
? ? ?iInterface ? ? ? ? ? ? ?0
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x01?EP 1 OUT
? ? ? ?bmAttributes ? ? ? ? ? ?2
? ? ? ? ?Transfer Type ? ? ? ? ? ?Bulk
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0200?1x 512 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 0
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x82?EP 2 IN
? ? ? ?bmAttributes ? ? ? ? ? ?2
? ? ? ? ?Transfer Type ? ? ? ? ? ?Bulk
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0200?1x 512 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 0
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x83?EP 3 IN
? ? ? ?bmAttributes ? ? ? ? ? ?3
? ? ? ? ?Transfer Type ? ? ? ? ? ?Interrupt
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0040?1x 64 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 1
? ? ?Endpoint Descriptor:
? ? ? ?bLength ? ? ? ? ? ? ? ? 7
? ? ? ?bDescriptorType ? ? ? ? 5
? ? ? ?bEndpointAddress ? ?0x04?EP 4 OUT
? ? ? ?bmAttributes ? ? ? ? ? ?3
? ? ? ? ?Transfer Type ? ? ? ? ? ?Interrupt
? ? ? ? ?Synch Type ? ? ? ? ? ? ? None
? ? ? ? ?Usage Type ? ? ? ? ? ? ? Data
? ? ? ?wMaxPacketSize ? ?0x0040?1x 64 bytes
? ? ? ?bInterval ? ? ? ? ? ? ? 1
Device Qualifier (for other device speed):
?bLength ? ? ? ? ? ? ? ?10
?bDescriptorType ? ? ? ? 6
?bcdUSB ? ? ? ? ? ? ? 2.00
?bDeviceClass ? ? ? ? ?255 Vendor Specific Class ?bDeviceSubClass ? ? ? 255 Vendor Specific Subclass ?bDeviceProtocol ? ? ? 255 Vendor Specific Protocol ?bMaxPacketSize0 ? ? ? ?64
?bNumConfigurations ? ? ?1
Device Status: ? ?0x0000
?(Bus Powered)# iwconfig lo ? ? ? ?no wireless extensions.eth0 ? ? ?no wireless extensions.
wlan0 ? ? IEEE 802.11bgn ?ESSID:"waddles"
? ? ? ? ?Mode:Managed ?Frequency:2.412 GHz ?Access Point: 00:22:3F:07:42:F3 ? ? ? ? ?Bit Rate=117 Mb/s ? Tx-Power=20 dBm
? ? ? ? ?Retry ?long limit:7 ? RTS thr:off ? Fragment thr:off
? ? ? ? ?Encryption key:off
? ? ? ? ?Power Management:off
? ? ? ? ?Link Quality=34/70 ?Signal level=-76 dBm
? ? ? ? ?Rx invalid nwid:0 ?Rx invalid crypt:0 ?Rx invalid frag:0 ? ? ? ? ?Tx excessive retries:0 ?Invalid misc:0 ? Missed beacon:0wlan1 ? ? IEEE 802.11bg ?ESSID:"waddles"
? ? ? ? ?Mode:Managed ?Frequency:2.412 GHz ?Access Point: 00:22:3F:07:42:F3 ? ? ? ? ?Bit Rate=36 Mb/s ? Tx-Power=20 dBm
? ? ? ? ?Retry ?long limit:7 ? RTS thr:off ? Fragment thr:off
? ? ? ? ?Encryption key:off
? ? ? ? ?Power Management:off
? ? ? ? ?Link Quality=44/70 ?Signal level=-66 dBm
? ? ? ? ?Rx invalid nwid:0 ?Rx invalid crypt:0 ?Rx invalid frag:0 ? ? ? ? ?Tx excessive retries:0 ?Invalid misc:0 ? Missed beacon:0tun0 ? ? ?no wireless extensions.
My network looks like this:
Linux ? ? ? ? ? ? ? ? ? ? ? ? ?Router/AP ? ? ? DSL Modem (wlan0) 192.168.1.57 ---/--- 192.168.1.1 --- 192.168.0.1 --- Internet (wlan1) 192.168.1.4 ?---/---
Between the router and the modem is an ethernet crossover cable.
# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.23 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.11 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.88 ms ^C --- 192.168.0.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 1.882/2.076/2.235/0.146 ms# route add -host 192.168.0.1 gw 192.168.1.1 dev wlan0# netstat -nr Kernel IP routing table Destination ? ? Gateway ? ? ? ? Genmask ? ? ? ? Flags ? MSS Window ?irtt Iface 192.168.0.1 ? ? 192.168.1.1 ? ? 255.255.255.255 UGH ? ? ? 0 0 ? ? ? ? ?0 wlan0 192.168.1.0 ? ? 0.0.0.0 ? ? ? ? 255.255.255.0 ? U ? ? ? ? 0 0 ? ? ? ? ?0 wlan1 192.168.1.0 ? ? 0.0.0.0 ? ? ? ? 255.255.255.0 ? U ? ? ? ? 0 0 ? ? ? ? ?0 wlan0 0.0.0.0 ? ? ? ? 192.168.1.1 ? ? 0.0.0.0 ? ? ? ? UG ? ? ? ?0 0 ? ? ? ? ?0 wlan1# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=158 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=168 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=162 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=5 ttl=63 time=178 ms 64 bytes from 192.168.0.1: icmp_seq=6 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=7 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=8 ttl=63 time=155 ms 64 bytes from 192.168.0.1: icmp_seq=9 ttl=63 time=434 ms 64 bytes from 192.168.0.1: icmp_seq=10 ttl=63 time=154 ms 64 bytes from 192.168.0.1: icmp_seq=11 ttl=63 time=174 ms 64 bytes from 192.168.0.1: icmp_seq=12 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=13 ttl=63 time=147 ms 64 bytes from 192.168.0.1: icmp_seq=14 ttl=63 time=170 ms 64 bytes from 192.168.0.1: icmp_seq=15 ttl=63 time=161 ms 64 bytes from 192.168.0.1: icmp_seq=16 ttl=63 time=190 ms 64 bytes from 192.168.0.1: icmp_seq=17 ttl=63 time=218 ms 64 bytes from 192.168.0.1: icmp_seq=18 ttl=63 time=166 ms 64 bytes from 192.168.0.1: icmp_seq=19 ttl=63 time=514 ms 64 bytes from 192.168.0.1: icmp_seq=20 ttl=63 time=177 ms 64 bytes from 192.168.0.1: icmp_seq=21 ttl=63 time=144 ms 64 bytes from 192.168.0.1: icmp_seq=22 ttl=63 time=191 ms 64 bytes from 192.168.0.1: icmp_seq=23 ttl=63 time=175 ms 64 bytes from 192.168.0.1: icmp_seq=24 ttl=63 time=156 ms 64 bytes from 192.168.0.1: icmp_seq=25 ttl=63 time=947 ms 64 bytes from 192.168.0.1: icmp_seq=26 ttl=63 time=1833 ms 64 bytes from 192.168.0.1: icmp_seq=27 ttl=63 time=2196 ms 64 bytes from 192.168.0.1: icmp_seq=28 ttl=63 time=1542 ms 64 bytes from 192.168.0.1: icmp_seq=29 ttl=63 time=816 ms 64 bytes from 192.168.0.1: icmp_seq=30 ttl=63 time=3045 ms 64 bytes from 192.168.0.1: icmp_seq=31 ttl=63 time=3181 ms 64 bytes from 192.168.0.1: icmp_seq=32 ttl=63 time=2287 ms 64 bytes from 192.168.0.1: icmp_seq=33 ttl=63 time=1496 ms 64 bytes from 192.168.0.1: icmp_seq=34 ttl=63 time=687 ms 64 bytes from 192.168.0.1: icmp_seq=35 ttl=63 time=173 ms ^C --- 192.168.0.1 ping statistics --- 35 packets transmitted, 35 received, 0% packet loss, time 34037ms rtt min/avg/max/mdev = 144.678/653.604/3181.758/855.953 ms, pipe 4NOTE --- The higher ping times occurred when downloading a 39kB image file.
# route del -host 192.168.0.1 gw 192.168.1.1 dev wlan0# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=2.37 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=2.10 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=1.96 ms 64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=2.38 ms ^C --- 192.168.0.1 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 1.964/2.206/2.388/0.187 ms
Quoted 6 lines
Quoted 3 lines
I have also tried using the carl9170 driver (2010_12_02) with compat-wireless and carl9170-fw (1.9.1-1) but I found 'iwconfig' would segfault when it tried to display ath0.
Can you please try with ath9k driver with the same compat wireless.Are you still seeing poor performance?
ath9k has no relation with this. ..mistaken by ar9170
Quoted 8 lines
Quoted 7 lines
Can somebody help me debug it further please?
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Quoted 7 lines · On Monday 06 December 2010 09:51:34 Wade Fitzpatrick wrote:
I have 2 USB wireless dongles:
- Generic Realtek RTL8187 using rtl8187 driver
- Netgear WN111v2 [Atheros AR9001-U(2)NG] using ar9170usb driverPerformance of the Netgear has degraded severely since updating to Arch Linux kernel 2.6.36.1-3 from 2.6.35.4-2, also reported by
http://article.gmane.org/gmane.linux.kernel.wireless.general/59911
here's a list of all changes to ar9170usb during 2.6.35-2.6.36:
git log v2.6.35..v2.6.36 --format=oneline drivers/net/wireless/ath/ar9170/ -> 5db5584441c drivers/net/wireless: Restore upper case words in wiphy_<level> messages a55427e8284 ar9170: add get_survey callback in order to get channel noise c96c31e499b drivers/net/wireless: Use wiphy_<level>
I don't think any of these changes would cause such problems.
Quoted 1 line
# iwconfig
Don't use iwconfig. iwconfig and other tools like iwlist, iwspy and iwevent are obsolete and deprecated.
What you want is: "iw dev wlanX link" instead.
<http://wireless.kernel.org/en/users/Documentation/iw/replace-iwconfig>
<http://wireless.kernel.org/en/users/Documentation/iw>
Quoted 4 lines
wlan0 IEEE 802.11bgn ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3 Bit Rate=117 Mb/s Tx-Power=20 dBm Link Quality=34/70 Signal level=-76 dBm
117 MBits/s, so ar9170usb? must be sending with 802.11n MCS rates.
Quoted 4 lines
wlan1 IEEE 802.11bg ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3
Bit Rate=36 Mb/s Tx-Power=20 dBm
Link Quality=44/70 Signal level=-66 dBm
where as rtl8187 only sticks to b/g rates.
for a fair comparison, I would recommend that both drivers should stick to b/g. So you could either disable minstrel_ht, or patch the driver (patch attached... just scroll down).
Or is it the other way round and ar9170usb is wlan1?
Quoted 3 lines
I have also tried using the carl9170 driver (2010_12_02) with compat-wireless and carl9170-fw (1.9.1-1) but I found 'iwconfig' would segfault when it tried to display ath0.
ath0? neither ar9170usb nor carl9170 (in fact no mac80211 driver) names the interface "ath0". Only the original vendor driver "otus" did that.
Regards,
Chr
---
drivers/net/wireless/ath/ar9170/main.c +1 -1
@@ -145,7 +145,7 @@ static struct ieee80211_channel ar9170_5ghz_chantable[] = {#define AR9170_HT_CAP \ { \ - .ht_supported = true, \ + .ht_supported = false, \ .cap = IEEE80211_HT_CAP_MAX_AMSDU | \ IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ IEEE80211_HT_CAP_SGI_40 | \
Thanks for the response, Christian. Here is what I am seeing now, using ar9170usb from compat-wireless (2010_12_02):
usb 2-5: new high speed USB device using ehci_hcd and address 5
usb 2-5: reset high speed USB device using ehci_hcd and address 5
usbcore: registered new interface driver ar9170usbarusb_lnx: module is from the staging directory, the quality is unknown, you have been warned. arusb - version 0.0.0.999
usbcore: registered new interface driver Otus
ath: EEPROM regdomain: 0x0
ath: EEPROM indicates default country code should be used
ath: doing EEPROM country->regdmn map search
ath: country maps to regdmn code: 0x3a
ath: Country alpha2 being used: US
ath: Regpair used: 0x3a
ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
Registered led device: ar9170-phy1::tx
Registered led device: ar9170-phy1::assoc
usb 2-5: Atheros AR9170 is registered as 'phy1'
# iw dev wlan0 link
Connected to 00:22:3f:07:42:f3 (on wlan0)
SSID: waddles
freq: 2412
RX: 2627575 bytes (16028 packets)
TX: 127342 bytes (600 packets)
signal: -62 dBm
tx bitrate: 54.0 MBit/s
# iw dev wlan1 link
Connected to 00:22:3f:07:42:f3 (on wlan1)
SSID: waddles
freq: 2412
RX: 6208 bytes (43 packets)
TX: 522 bytes (5 packets)
signal: -61 dBm
tx bitrate: 6.5 MBit/s MCS 0
# iw event -f
wlan1 (phy #1): deauth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 reason 2: Previous authentication no longer valid [frame: c0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 70 00 02 00]
wlan1 (phy #1): disconnected (by AP) reason: 2: Previous authentication no longer valid
wlan1 (phy #1): scan started
wlan1 (phy #1): scan finished: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462, ""
wlan1 (phy #1): auth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 status: 0: Successful [frame: b0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 00 00 00 00 02 00 00 00]
wlan1: new station 00:22:3f:07:42:f3
wlan1 (phy #1): assoc 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 status: 0: Successful [frame: 10 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 10 00 31 04 00 00 03 c0 01 08 82 84 8b 0c 12 96 18 24 32 04 30 48 60 6c dd 18 00 50 f2 02 01 01 82 00 03 a4 00 00 27 a4 00 00 42 43 5e 00 62 32 2f 00 dd 09 00 03 7f 01 01 00 00 ff 7f dd 0a 00 03 7f 04 01 00 00 00 00 00 dd 1e 00 90 4c 33 4c 10 1b ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2d 1a 4c 10 1b ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 dd 1a 00 90 4c 34 01 00 1b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3d 16 01 00 1b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00]
wlan1 (phy #1): connected to 00:22:3f:07:42:f3
wlan1 (phy #1): deauth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 reason 2: Previous authentication no longer valid [frame: c0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 70 00 02 00]
wlan1 (phy #1): disconnected (by AP) reason: 2: Previous authentication no longer valid
wlan1 (phy #1): scan started
wlan1 (phy #1): scan finished: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462, ""
wlan1 (phy #1): auth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 status: 0: Successful [frame: b0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 00 00 00 00 02 00 00 00]
wlan1: new station 00:22:3f:07:42:f3
wlan1 (phy #1): assoc 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 status: 0: Successful [frame: 10 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 10 00 31 04 00 00 03 c0 01 08 82 84 8b 0c 12 96 18 24 32 04 30 48 60 6c dd 18 00 50 f2 02 01 01 82 00 03 a4 00 00 27 a4 00 00 42 43 5e 00 62 32 2f 00 dd 09 00 03 7f 01 01 00 00 ff 7f dd 0a 00 03 7f 04 01 00 00 00 00 00 dd 1e 00 90 4c 33 4c 10 1b ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2d 1a 4c 10 1b ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 dd 1a 00 90 4c 34 01 00 1b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3d 16 01 00 1b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00]
wlan1 (phy #1): connected to 00:22:3f:07:42:f3
wlan1 (phy #1): deauth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 reason 2: Previous authentication no longer valid [frame: c0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 70 00 02 00]
wlan1 (phy #1): disconnected (by AP) reason: 2: Previous authentication no longer validThe wlan1 link is unusable. If I create a host route and ping the modem over wlan1, all I get is 'Destination Host Unreachable' messages.
Note that wlan0 (the RTL8187) also has updated drivers but is stable throughout this.
Any more suggestions?
Regards,
Wade.
Quoted 65 lines · Christian Lamparter
Quoted 7 lines · On Monday 06 December 2010 09:51:34 Wade Fitzpatrick wrote:
I have 2 USB wireless dongles:
- Generic Realtek RTL8187 using rtl8187 driver
- Netgear WN111v2 [Atheros AR9001-U(2)NG] using ar9170usb driverPerformance of the Netgear has degraded severely since updating to Arch Linux kernel 2.6.36.1-3 from 2.6.35.4-2, also reported by
http://article.gmane.org/gmane.linux.kernel.wireless.general/59911here's a list of all changes to ar9170usb during 2.6.35-2.6.36:
git log v2.6.35..v2.6.36 --format=oneline
drivers/net/wireless/ath/ar9170/->5db5584441cdrivers/net/wireless: Restore upper case words in wiphy_<level> messagesa55427e8284ar9170: addget_surveycallback in order to get channel noisec96c31e499bdrivers/net/wireless: Use wiphy_<level>I don't think any of these changes would cause such problems.
Quoted 1 line
# iwconfigDon't use iwconfig. iwconfig and other tools like iwlist, iwspy and iwevent are obsolete and deprecated.
What you want is: "iw dev wlanX link" instead.
<http://wireless.kernel.org/en/users/Documentation/iw/replace-iwconfig>
<http://wireless.kernel.org/en/users/Documentation/iw>Quoted 4 lines
wlan0 IEEE 802.11bgn ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3 Bit Rate=117 Mb/s Tx-Power=20 dBm Link Quality=34/70 Signal level=-76 dBm117 MBits/s, so ar9170usb? must be sending with 802.11n MCS rates.
Quoted 4 lines
wlan1 IEEE 802.11bg ESSID:"waddles"
Mode:Managed Frequency:2.412 GHz Access Point: 00:22:3F:07:42:F3
Bit Rate=36 Mb/s Tx-Power=20 dBm
Link Quality=44/70 Signal level=-66 dBmwhere as rtl8187 only sticks to b/g rates.
for a fair comparison, I would recommend that both drivers should stick to b/g. So you could either disable
minstrel_ht, or patch the driver (patch attached... just scroll down).Or is it the other way round and ar9170usb is wlan1?
Quoted 3 lines
I have also tried using the carl9170 driver (2010_12_02) with compat-wireless and carl9170-fw (1.9.1-1) but I found 'iwconfig' would segfault when it tried to display ath0.
ath0? neither ar9170usb nor carl9170 (in fact no mac80211 driver) names the interface "ath0". Only the original vendor driver "otus" did that.
Regards,
Chr---
drivers/net/wireless/ath/ar9170/main.c +1
-1@@ -145,7 +145,7 @@ static struct ieee80211_channel ar9170_5ghz_chantable[] = {#define AR9170_HT_CAP \ { \ - .ht_supported = true, \ + .ht_supported = false, \ .cap = IEEE80211_HT_CAP_MAX_AMSDU | \ IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ IEEE80211_HT_CAP_SGI_40 | \
A message that is not in the archive (sent off-list or not yet received): [email protected]
Quoted 2 lines · On Monday 06 December 2010 16:12:42 Wade Fitzpatrick wrote:
Thanks for the response, Christian. Here is what I am seeing now, using ar9170usb from compat-wireless (2010_12_02):
what happened to carl9170?
Quoted 7 lines
usb 2-5: new high speed USB device using
ehci_hcdand address 5 usb 2-5: reset high speed USB device usingehci_hcdand address 5
usbcore: registered new interface driver ar9170usbarusb_lnx: module is from the staging directory, the quality is unknown, you have been warned.
arusb - version 0.0.0.999
usbcore: registered new interface driver Otus
kill otus. Unless you really want it to steal the device.
Quoted 11 lines
ath: EEPROM regdomain:
0x0
ath: EEPROM indicates default country code should be used
ath: doing EEPROMcountry->regdmnmap search
ath: country maps to regdmn code:0x3a
ath: Country alpha2 being used: US
ath: Regpair used:0x3a
ieee80211 phy1: Selected rate control algorithm 'minstrel_ht' Registered led device: ar9170-phy1::tx
Registered led device: ar9170-phy1::assoc
usb 2-5: Atheros AR9170 is registered as 'phy1'
Quoted 16 lines
# iw dev wlan0 link
Connected to 00:22:3f:07:42:f3 (on wlan0)
SSID: waddles
freq: 2412
RX: 2627575 bytes (16028 packets)
TX: 127342 bytes (600 packets)
signal: -62 dBm
tx bitrate: 54.0 MBit/s
# iw dev wlan1 link
Connected to 00:22:3f:07:42:f3 (on wlan1)
SSID: waddles
freq: 2412
RX: 6208 bytes (43 packets)
TX: 522 bytes (5 packets)
signal: -61 dBm
tx bitrate: 6.5 MBit/s MCS 0 ^^ again MCS.
Have you actually patched the driver?
Quoted 4 lines
# iw event -f wlan1 (phy #1): deauth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 reason 2: Previous authentication no longer valid [frame: c0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 70 00 02 00]
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wlan1 (phy #1): disconnected (by AP) reason: 2: Previous authentication no longer valid [...] wlan1 (phy #1): deauth 00:22:3f:07:42:f3 -> 00:22:3f:8d:7b:05 reason 2: Previous authentication no longer valid [frame: c0 00 40 01 00 22 3f 8d 7b 05 00 22 3f 07 42 f3 00 22 3f 07 42 f3 70 00 02 00] wlan1 (phy #1): disconnected (by AP) reason: 2: Previous authentication no longer valid
and? your ap (what is it btw?) has (silently) kicked you... you would need to put one interface into monitor mode and sniff what really happens.
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The wlan1 link is unusable. If I create a host route and ping the modem over wlan1, all I get is 'Destination Host Unreachable' messages.
Note that wlan0 (the RTL8187) also has updated drivers but is stable throughout this.
Any more suggestions?
again same as before, patch the driver (or migrate to carl9170). If you are unfamiliar with the procedure you could also reload mac80211.
modprobe mac80211 ieee80211_default_rc_algo=minstrel (note, other drivers might depend on mac80211, you have to unload them first.
lsmod | grep ^mac80211
will tell you which).
Afterwards, verify that the system really loads the new module. Or took the new default_rc settings(see /sys/module/mac80211/parameters/ieee80211_default_rc_algo )
Regards,
Chr
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drivers/net/wireless/ath/ar9170/main.c +1
-1@@ -145,7 +145,7 @@ static struct ieee80211_channel ar9170_5ghz_chantable[] = {#define AR9170_HT_CAP \ { \ - .ht_supported = true, \ + .ht_supported = false, \ .cap = IEEE80211_HT_CAP_MAX_AMSDU | \ IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ IEEE80211_HT_CAP_SGI_40 | \