[Pkg-alsa-devel] Bug#260445: marked as done (alsa-base: Loss of left channel)

Wed Sep 1 02:18:15 UTC 2004

Your message dated Tue, 31 Aug 2004 21:08:40 +0200
with message-id <1093979320.11462.42.camel@thanatos>
and subject line Closing stale report of driver bugs
has caused the attached Bug report to be marked as done.

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From: Paul Gotch <paulg@chiark.greenend.org.uk>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: alsa-base: Loss of left channel
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Package: alsa-base
Version: 1.0.5a-1
Severity: normal

Every so often I lose the left hand channel of sound completely. If this
happens is appears to come back if I use alsamixer to pull the gain on the
control labled "DAC" to minimum then back up to maxmimum.

AlsaMixer is reporting a CS4297A rev 4. I believe this is a bug in ALSA as
there is a post on the alsa-user mailing list from someone who's seen the
same problems however there is no upstream bug report
http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg09393.html

Fixing the lack of sound in this way appears to cause a secondary problem
of high background noise levels which sounds like resampling noise. There
is a bug in the ALSA database about noise when down sampling 
https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000385
hwever in my case upsampling from 44.1KHz to 48KHz will be happening.

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (700, 'testing'), (600, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.5
Locale: LANG=en_GB, LC_CTYPE=en_GB

Versions of packages alsa-base depends on:
ii  alsa-utils                    1.0.5-1    Advanced Linux Sound Architecture 
ii  debconf                       1.4.29     Debian configuration management sy
ii  debianutils                   2.8.3      Miscellaneous utilities specific t
ii  module-init-tools             3.1-pre5-1 tools for managing Linux kernel mo
ii  modutils                      2.4.26-1   Linux module utilities
ii  psmisc                        21.5-1     Utilities that use the proc filesy

-- debconf information:
  alsa-common/card-list:
* alsa-base/current_card: done
  alsa-base/alsactl_store_on_shutdown: autosave always
  alsa-base/card_list: cs46xx done

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>From jdthood@aglu.demon.nl Tue Aug 31 12:08:26 2004
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Subject: Closing stale report of driver bugs
From: Thomas Hood <jdthood@aglu.demon.nl>
To: 260445-done@bugs.debian.org
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Date: Tue, 31 Aug 2004 21:08:40 +0200
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> Every so often I lose the left hand channel of sound completely. If this
> happens is appears to come back if I use alsamixer to pull the gain on the
> control labled "DAC" to minimum then back up to maxmimum.

Sounds like a driver bug.  Possibly flaky hardware.  It is almost
certainly not a bug in the alsa-base package.  You should report bugs like
these upstream to the ALSA developers.

As this report is old I think it is of limited value.  Closing.  Please
reopen if the bug is still relevant.
--
Thomas Hood