[ALSA - driver 0001585]: No sound from Soundblaster Live USB since updating kernel drivers to 1.0.10.rc3

bugtrack
2005-12-31T07:54:15Z

Last Modified: 12-31-2005 08:54 CET
======================================================================
Summary: No sound from Soundblaster Live USB since updating
kernel drivers to 1.0.10.rc3
Description:
Every kernel since 2.6.14 (I have tried rc1, mm1, mm2, and rc2) has left
my external USB sound card broken. It appears to be something in the
alsa-git-2005-11-07.patch that was posted to LKML on 11/07/05:

subject: [ALSA UPDATE] 1.0.10rc3
message-id:
<Pine.LNX.4.61.0511071457480.8818@tm8103.perex-int.cz>

Applying this alsa update to 2.6.14 also renders the card silent. The
card
is visible in /proc/asound/cards, alsamixer sees it and I can adjust the
volume, but I get no sound from xmms, mplayer, etc. I tried enabling alsa
debug and verbose printk but I was unable to find any additional messages
from dmesg or in any log files. The card is a Creative Labs SoundBlaster
Live 24-bit external. I'm using the SPDIF output to run sound through a
home theater system. I'm running debian unstable on a Toshiba laptop.

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smithbone - 12-31-05 07:10
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yes they both get called:

Dec 31 00:06:14 Vedit kernel: snd_usb_pcm_playback_trigger()
Dec 31 00:06:17 Vedit kernel: prepare_startup_playbak_urb()
Dec 31 00:06:17 Vedit kernel: prepare_startup_playbak_urb()
Dec 31 00:06:17 Vedit kernel: snd_usb_pcm_playback_trigger()

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afran - 12-31-05 08:54
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Just wanted to let you know, I've got the same problem here with my
Terratec Phase 26 USB (since kernel release 2.6.15-rc1, now running
2.6.14.4 and ALSA 1.0.10rc1 without problems): Everything loads up fine
but no sound is played, not even at the card's own headphone connector (so
it's not a problem with SPDIF).

But there is some other yet similar problem, I've recognized earlier:
Sometimes (perhaps once in 2 weeks, happens quite randomly) everything
would load up fine, but the card would not give any sound (as above). When
this happens I have to plug the card's USB cable and reconnect (just
resetting volume level and mute doesn't work, I've not been able to check
whether reloading the driver as kernel module would help).

Unfortunately, I've not been able to reproduce the latter problem as it
seems to be happening without any clue as to what may have caused it, plus
it only occurs very seldomly, about every 30th or 40th reboot.

Issue History
Date Modified Username Field Change
======================================================================
11-21-05 17:45 sailfrog New Issue
11-21-05 17:45 sailfrog Distribution => Debian
11-21-05 17:45 sailfrog Kernel Version => > 2.6.14 (rc1, mm1,
mm2, rc2)
11-21-05 18:45 sailfrog Issue Monitored: sailfrog
11-22-05 07:54 Clemens LadischNote Added: 0006785
12-09-05 00:51 sailfrog Note Added: 0006965
12-09-05 16:46 smithbone Note Added: 0006968
12-22-05 02:25 sailfrog Note Added: 0007117
12-30-05 19:48 sailfrog Note Added: 0007251
12-30-05 20:01 rlrevell Note Added: 0007252
12-30-05 20:08 rlrevell Note Added: 0007254
12-30-05 20:31 sailfrog Note Added: 0007256
12-30-05 20:34 rlrevell Note Added: 0007257
12-30-05 20:41 sailfrog Note Added: 0007258
12-30-05 20:43 rlrevell Note Added: 0007259
12-31-05 02:32 smithbone Note Added: 0007319
12-31-05 03:45 rlrevell File Added: alsa-git-2005-11-07-usbaudio.patch

12-31-05 03:47 rlrevell Note Added: 0007331
12-31-05 05:31 smithbone Note Added: 0007343
12-31-05 05:33 rlrevell Note Added: 0007344
12-31-05 05:37 rlrevell Note Added: 0007345
12-31-05 07:10 smithbone Note Added: 0007347
12-31-05 08:54 afran Note Added: 0007354