FS#33272 : [linux] ALSA and usb external sound card

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FS#33272 - [linux] ALSA and usb external sound card

Attached to Project: Arch Linux
Opened by Dmitry (faxtrode) - Wednesday, 02 January 2013, 18:31 GMT
Last edited by Tobias Powalowski (tpowa) - Tuesday, 17 September 2013, 10:03 GMT

Task Type	Bug Report
Category	Upstream Bugs
Status	Closed
Assigned To	Tobias Powalowski (tpowa) Thomas Bächler (brain0)
Architecture	x86_64
Severity	Medium
Priority	Normal
Reported Version
Due in Version	Undecided
Due Date	Undecided
Percent Complete
Votes	0
Private	No

Details

Description:I have got dj midi-controller Hercules DJ Console RMX2 with buildin audio interface(24bit/96kHz). Midi device is detected and works well, but the sound card doesn`t work with alsamixer, sometimes this usage causes either kernel panic or error "protocol error". Sound card uses for playing 2 independent stereo streams.
[code]
aplay -l
card 2: Rmx2 [DJConsole Rmx2], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
[/code]

[code]
[user@myhost ~]$ amidi -l
Dir Device Name
IO hw:2,0,0 DJConsole Rmx2 MIDI
[/code]
[code]
[user@myhost ~]$ cat /proc/asound/card2/pcm0p/info
card: 2
device: 0
subdevice: 0
stream: PLAYBACK
id: USB Audio
name: USB Audio
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1
[/code]
[code]
lsusb
Bus 001 Device 007: ID 06f8:b113 Guillemot Corp
[/code]

Additional info:
* package version(s)
* config and/or log files etc.

Steps to reproduce:it seems the problem is connected with some alsa module, which is absent, or valid driver configuration is needed

This task depends upon

Closed by Tobias Powalowski (tpowa)
Tuesday, 17 September 2013, 10:03 GMT
Reason for closing: No response

Comments (7)
Related Tasks (0/0)

Comment by Dmitry (faxtrode) - Wednesday, 02 January 2013, 18:34 GMT

There is also usbmixer configuration:
[user@myhost ~]$ cat /proc/asound/Rmx2/usbmixer
USB Mixer: usb_id=0x06f8b113, ctrlif=0, ctlerr=0
Card: Hercules DJConsole Rmx2 at usb-0000:00:13.5-3, high speed
USB Mixer: usb_id=0x06f8b113, ctrlif=0, ctlerr=0
Card: Hercules DJConsole Rmx2 at usb-0000:00:13.5-3, high speed
Unit: 10
Control: name=" Playback Volume", index=1
Info: id=10, control=2, cmask=0x0, channels=1, type="S16"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 10
Control: name=" Playback Volume", index=0
Info: id=10, control=2, cmask=0xf, channels=4, type="S16"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 10
Control: name=" Playback Switch", index=1
Info: id=10, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 10
Control: name=" Playback Switch", index=0
Info: id=10, control=1, cmask=0xf, channels=4, type="INV_BOOLEAN"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 11
Control: name=" Capture Volume", index=1
Info: id=11, control=2, cmask=0x0, channels=1, type="S16"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 11
Control: name=" Capture Volume", index=0
Info: id=11, control=2, cmask=0xf, channels=4, type="S16"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 11
Control: name=" Capture Switch", index=1
Info: id=11, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
Volume: min=0, max=1, dBmin=0, dBmax=0
Unit: 11
Control: name=" Capture Switch", index=0
Info: id=11, control=1, cmask=0xf, channels=4, type="INV_BOOLEAN"
Volume: min=0, max=1, dBmin=0, dBmax=0

Comment by Tobias Powalowski (tpowa) - Tuesday, 07 May 2013, 06:36 GMT

Is this still valid with 3.8.11 or 3.9.0?

Comment by Dmitry (faxtrode) - Saturday, 25 May 2013, 11:46 GMT

I have got the opportunity to test the device with the stock repo kernel 3.9.3. Changelog on kernel.org for 3.9.1 says that the problem is fixed(the problem marked in changelog as "ALSA: usb-audio: Fix autopm error during probing"). nevertheless the problem is still exists. I tryed to connect the device and configure it through alsamixer, but I got the error "unable to open device protocol error".
Dmesg shows from log the same lines: LSA mixer.c:352 cannot get ctl value: req = 0x83, wValue = 0x201, wIndex = 0xa00, type = 4. It is not clear why maintainers write to changelog that the problem is fixed.

Comment by Gerardo Exequiel Pozzi (djgera) - Saturday, 25 May 2013, 11:47 GMT

Please report to upstream, there is nothing to do here, just tracking the bug.

Comment by Dmitry (faxtrode) - Saturday, 25 May 2013, 13:36 GMT

I downloaded the kernel ver. 3.9.4, patched 'helper.c' with https://bugs.launchpad.net/mixxx/+bug/1096687/+attachment/3645060/+files/snd_usb_audio_rmx2.patch ,compiled the kernel and began testing RMX2. Now the device is detected right. Sound is processing with samplerate 96kHz. Alsamixer can drive internal sound device(detected as usb mixer) but only manually, not through device`s knobs.Only headphones volume knob works, but , it works apart of other knobs, so it is not the part of the midi-device. The RMX2 was connected to Mixxx DJ software and detected in it, but when I try to attach the layout for midi-device in the software, operation fails; previously it worked but on another Mixxx version(now I use 3841 release). I don`t know what this problem is connected with. It may be either problem with configuring midi device after the time I released the patch or problem with the current Mixxx revision. I try to find out this issue is connected with. Anyway amidi detects midi-device and I`d like to advise to you to add this patch in the kernel mainline. There are also some screenshoots I want to post here.