From: bugtrack@alsa-project.org
To: alsa-devel@alsa-project.org
Subject: [ALSA - driver 0000433]: Clicking noise on some sample rates with Chaintech AV-710 (ICE1724)
Date: Wed, 1 Sep 2004 23:23:47 +0200 (CEST) [thread overview]
Message-ID: <20040901212347.AE39AE01F@server.perex-int.cz> (raw)
A BUGNOTE has been added to this bug.
======================================================================
https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000433
======================================================================
Reported By: cabbagerat
Assigned To:
======================================================================
Project: ALSA - driver
Bug ID: 433
Category: PCI - ice1724
Reproducibility: always
Severity: major
Priority: normal
Status: new
Distribution: Debian Unstable
Kernel Version: 2.6.7
======================================================================
Date Submitted: 08-09-2004 11:36 CEST
Last Modified: 09-01-2004 23:23 CEST
======================================================================
Summary: Clicking noise on some sample rates with Chaintech AV-710 (ICE1724)
Description:
Playing sound at any sample rate other than 48000Hz produces a loud
clicking sound along with the expected sound. This started with the ALSA
included with kernel 2.6.7 (worked perfectly in 2.6.6).
Clicking sound is loudest at 44.1kHz, not present at 48Khz and soft but
noticeable at 96kHz.
I have tried playing with alsaplayer, aplay, mpg123 and a variety of
gstreamer based apps - all display this behavior. Both native alsa and OSS
emulation display the same problem.
======================================================================
----------------------------------------------------------------------
av710user - 08-21-2004 02:40 CEST
----------------------------------------------------------------------
I hear clicking noises with my AV710 at every sample rate I've tried.
dmesg says "invalid EEPROM version 1" after loading the drivers. If it's
any help, the VIA ICEnsemble chip on the AV710 isn't a 1724 but a 1721. A
site I found using Google speculates that the Envy24HT-S (VT1721) is
similar to the Envy24PT (VT1720). I'm using the ALSA 1.0.6a drivers, GCC
3.3.3 and Linux 2.4.26.
----------------------------------------------------------------------
cabbagerat - 08-22-2004 10:04 CEST
----------------------------------------------------------------------
Upgrading to kernel version 2.6.8.1-mm3 (CONFIG_PREEMPT disabled) stopped
the clicking noises in all sample rates. Brief testing of 2.6.8.1 without
preempt enabled also seemed to suggest that the clicking had gone. This
leads me to believe that the clicking sound is related in some way to
preempt.
----------------------------------------------------------------------
av710user - 08-25-2004 03:00 CEST
----------------------------------------------------------------------
I tried vanilla 2.6.8.1's ALSA drivers, and they show the same behavior as
1.0.6a and Linux 2.4.26 with my sound card. The buzzing is less noisy at
48000, but still there. Switching between kernels with and without
preemption hasn't had an effect for me. Now to try the mm4 patch...
----------------------------------------------------------------------
av710user - 08-25-2004 05:56 CEST
----------------------------------------------------------------------
No luck with mm3 or mm4. Another oddball from VIA.
----------------------------------------------------------------------
cabbagerat - 09-01-2004 23:23 CEST
----------------------------------------------------------------------
Testing a bunch of kernel versions on both an Athlon (VIA KT133A chipset)
and an Athlon64 (VIA K8T800 chipset) system seems to indicate that the
clicking is linked to the kernel version. 2.6.7, 2.6.8 and 2.6.9-pre1 all
show the problem, where 2.6.8-mm1, mm3 and 2.6.9-pre1-mm1 all work as
expected - all with the same .config (just ran 'make oldconfig' to
update).
Bug History
Date Modified Username Field Change
======================================================================
08-09-04 11:36 cabbagerat New Bug
08-09-04 11:36 cabbagerat Distribution => Debian Unstable
08-09-04 11:36 cabbagerat Kernel Version => 2.6.7
08-09-04 11:37 cabbagerat Bug Monitored: cabbagerat
08-21-04 02:40 av710user Bugnote Added: 0001603
08-22-04 10:04 cabbagerat Bugnote Added: 0001608
08-25-04 03:00 av710user Bugnote Added: 0001616
08-25-04 05:56 av710user Bugnote Added: 0001618
09-01-04 23:23 cabbagerat Bugnote Added: 0001681
======================================================================
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next reply other threads:[~2004-09-01 21:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-01 21:23 bugtrack [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-12-28 21:38 [ALSA - driver 0000433]: Clicking noise on some sample rates with Chaintech AV-710 (ICE1724) bugtrack
2005-12-28 20:57 bugtrack
2005-04-09 2:36 bugtrack
2004-08-25 3:56 bugtrack
2004-08-25 1:00 bugtrack
2004-08-22 8:04 bugtrack
2004-08-21 0:40 bugtrack
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