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New: Regression: ALSA: ua101 breaks genuine Edirol UA-1000 ("playback packet size 560 too small for 15 capture frames")

Bug 222261 [email protected] 1 participant 4 messages Nov 12 USB

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https://bugzilla.kernel.org/show_bug.cgi?id=222261

Bug ID: 222261
Summary: Regression: ALSA: ua101 breaks genuine Edirol UA-1000
("playback packet size 560 too small for 15 capture frames")
Product: Drivers
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: USB
Assignee: [email protected]
Reporter: [email protected]
Regression: No

### Summary of Regression
After a recent kernel update on Linux Mint (Ubuntu kernel base), my genuine Edirol UA-1000 USB audio interface (0582:0044) stopped being registered by ALSA.

The snd-ua101 driver aborts probe initialisation with:
playback packet size 560 too small for 15 capture frames

This appears to be a regression caused by commit 86f86e6fdedc ("ALSA: ua101:
reject mismatched capture/playback packet sizes"), which incorrectly assumed genuine UA-101/UA-1000 hardware declares proportional packet sizes across all endpoints.

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=86f86e6fdedc33c5b8d38b9208b350f8accf57ee

### Hardware & Environment Details
* **Device:** Roland / EDIROL UA-1000
* **USB ID:** 0582:0044 (bcdDevice 1.07)
* **Distribution:** Linux Mint (Ubuntu-based)
* **Last Working Kernel:** []
* **Broken Kernel:** [6.8.0-149-lowlatency]

### Steps to Reproduce
1. Boot into the updated kernel with a genuine Edirol UA-1000 connected via USB 2.0/3.0.
2. Check /proc/asound/cards and dmesg.
3. Power-cycle or switch the hardware sample rate selector on the UA-1000 across all supported rates (44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz).

### Expected Result
snd-ua101 binds to 0582:0044 and registers the UA1000 sound card in /proc/asound/cards, as it did in previous kernels.

### Actual Result
snd-ua101 rejects the device during probe at every physical sample rate setting (44.1, 48, 88.2, and 96 kHz), leaving the interface unregistered in ALSA.

### Relevant dmesg Output

[ 2622.796887] usb 3-3: new high-speed USB device number 5 using xhci_hcd
[ 2622.928793] usb 3-3: New USB device found, idVendor=0582, idProduct=0044,
bcdDevice= 1.07
[ 2622.928798] usb 3-3: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2622.928800] usb 3-3: Product: UA-1000
[ 2622.928801] usb 3-3: Manufacturer: EDIROL
[ 2622.928802] usb 3-3: SerialNumber: ZT02743
[ 2622.934792] usb 3-3: playback packet size 560 too small for 15 capture

frames

### USB Descriptors (lsusb -v -d 0582:0044)
sudo lsusb -v -d 0582:0044

Bus 003 Device 010: ID 0582:0044 Roland Corp. EDIROL UA-1000 Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x0582 Roland Corp.
idProduct 0x0044 EDIROL UA-1000
bcdDevice 1.07

  iManufacturer           1 EDIROL
  iProduct                2 UA-1000
  iSerial                 3 ZT02743
  bNumConfigurations      1

Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x00bd
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 1
iInterface 0
** UNRECOGNIZED: 0b 24 01 00 01 35 00 03 00 01 02 ** UNRECOGNIZED: 0c 24 02 01 01 01 00 0a 00 00 00 00 ** UNRECOGNIZED: 0c 24 02 02 03 06 00 0c 00 00 00 00 ** UNRECOGNIZED: 09 24 03 03 01 01 00 02 00 ** UNRECOGNIZED: 09 24 03 04 03 06 00 01 00
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 2
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 0b 24 02 01 0c 04 18 01 80 bb 00 Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 37
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Implicit feedback Data
wMaxPacketSize 0x02d0 1x 720 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 2
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 0b 24 02 01 0a 04 18 01 80 bb 00 Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0230 1x 560 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 3
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 3
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 8
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)

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#1 lore raw

[Bug 222261] Regression: ALSA: ua101 breaks genuine Edirol UA-1000 ("playback packet size 560 too small for 15 capture frames")

https://bugzilla.kernel.org/show_bug.cgi?id=222261

Michał Pecio ([email protected]) changed:

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

--- Comment #1 from Michał Pecio ([email protected]) --- You have assigned this bug to USB drivers, but sound drivers are a separate subsystem, including USB ones. Nobody relevant will see this.

I think Sound(ALSA) is the proper "component" for this, or email [email protected].

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#2 lore raw

[Bug 222261] Regression: ALSA: ua101 breaks genuine Edirol UA-1000 ("playback packet size 560 too small for 15 capture frames")

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=222261

[email protected] changed:

What |Removed |Added
----------------------------------------------------------------------------
Component|USB |Sound(ALSA)

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