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New: kernel detects Mediatek bluetooth as Lite-On and not working

Bug 216819 [email protected] 1 participant 5 messages Dec 18, 2022 – Jul 25, 2023 Bluetooth drivers

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#0 lore raw

https://bugzilla.kernel.org/show_bug.cgi?id=216819

            Bug ID: 216819
           Summary: kernel detects Mediatek bluetooth as Lite-On and not
                    working
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.19.0-26-generic
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

I have an Acer Aspire3 A315-59G laptop. It has Mediatek bluetooth and wifi. wifi works good, even better than how it works on Windows. But the bluetooth does not work.
I also tested it on fedora with kernel 6.0.7 and 6.0.12 and did not worked either

systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; preset:
enabled)

     Active: active (running) since Sun 2022-12-18 13:19:40 +0330; 2h 14min ago
       Docs: man:bluetoothd(8)
   Main PID: 964 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 28404)
     Memory: 1.8M
        CPU: 30ms
     CGroup: /system.slice/bluetooth.service
             └─964 /usr/lib/bluetooth/bluetoothd
Dec 18 13:19:40 ws systemd[1]: Starting Bluetooth service...
Dec 18 13:19:40 ws systemd[964]: ConfigurationDirectory 'bluetooth' already
exists but the mode is different. (File system: 755 ConfigurationDirectoryMode:
555)
Dec 18 13:19:40 ws bluetoothd[964]: Bluetooth daemon 5.65
Dec 18 13:19:40 ws bluetoothd[964]: Starting SDP server
Dec 18 13:19:40 ws systemd[1]: Started Bluetooth service.
Dec 18 13:19:40 ws bluetoothd[964]: Bluetooth management interface 1.22

initialized

lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0408:4033 Quanta Computer, Inc. ACER HD User Facing Bus 001 Device 002: ID 1ea7:0064 SHARKOON Technologies GmbH 2.4GHz Wireless rechargeable vertical mouse [More&Better]
Bus 001 Device 004: ID 04ca:3801 Lite-On Technology Corp. Wireless_Device Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Windows .inf file for that hardware
%Generic.DeviceDesc% = MTKBT,
USB\VID_04CA&PID_3801&MI_00

rfkill list
0: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
1: acer-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

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#1 lore raw

[Bug 216819] kernel detects Mediatek bluetooth does not work

https://bugzilla.kernel.org/show_bug.cgi?id=216819

Hoshyar Karimi ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

            Summary|kernel detects Mediatek     |kernel detects Mediatek
                   |bluetooth as Lite-On and    |bluetooth does not work
                   |not working                 |
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#2 lore raw

[Bug 216819] kernel detects Mediatek bluetooth does not work

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=216819

--- Comment #1 from Hoshyar Karimi ([email protected]) --- sudo cat /sys/kernel/debug/usb/devices| awk '/3801/' RS=

T:  Bus=01 Lev=01 Prnt=01 Port=09 Cnt=03 Dev#=  4 Spd=480  MxCh= 0
D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=04ca ProdID=3801 Rev= 1.00
S:  Manufacturer=MediaTek Inc.
S:  Product=Wireless_Device
S:  SerialNumber=000000000
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
A:  FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=01
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=125us
E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
I:  If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  63 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  63 Ivl=1ms
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#3 lore raw

[Bug 216819] kernel detects Mediatek bluetooth does not work

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=216819

jeremy ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]

--- Comment #2 from jeremy ([email protected]) --- Looks like it needs a patch similar to
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.2-rc2&id=393dc5d19c825906f955210f10ee3befc39854f7
for it to be supported

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#4 lore raw

[Bug 216819] kernel detects Mediatek bluetooth does not work

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=216819

--- Comment #3 from jeremy ([email protected]) --- This can be closed, fixed with
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.5-rc3&id=13209415d0e88396d99d346b184864834d70d68a

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