From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0000433]: Clicking noise on some sample rates with Chaintech AV-710 (ICE1724) Date: Wed, 25 Aug 2004 03:00:19 +0200 (CEST) Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <20040825010019.5C4DA1102F@server.perex-int.cz> Content-Type: text/plain; charset=iso-8859-1 Return-path: Received: from mail.perex.cz (gate.perex.cz [82.113.61.162]) by alsa.alsa-project.org (ALSA's E-mail Delivery System) with ESMTP id CB8C128B for ; Wed, 25 Aug 2004 03:00:19 +0200 (MEST) Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org 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: 08-25-2004 03:00 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... 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 ====================================================================== ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285