From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001015]: Static when not playing through the OSS Emulation Date: Sat, 26 Mar 2005 00:50:52 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Received: from bugtrack.alsa-project.org (gate.perex.cz [82.113.61.162]) by alsa.alsa-project.org (ALSA's E-mail Delivery System) with ESMTP id 294711F1 for ; Sat, 26 Mar 2005 00:50:53 +0100 (MET) Sender: alsa-devel-admin@lists.sourceforge.net 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 NOTE has been added to this issue. ====================================================================== ====================================================================== Reported By: wintermute77 Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1015 Category: PCI - ice1724 Reproducibility: always Severity: major Priority: normal Status: new Distribution: Gentoo Kernel Version: 2.6.10-ck5 ====================================================================== Date Submitted: 03-25-2005 04:00 CET Last Modified: 03-26-2005 00:50 CET ====================================================================== Summary: Static when not playing through the OSS Emulation Description: I get crackling static coming in when sound is being output to my speakers (not when there is nothing playing) using the ice1724 driver with my M-Audio Revolution 7.2. The problem appears to go away if I use OSS emulation, but of course this isn't desirable since I cannot use dmix in this case. I am using xmms and mplayer to produce the badness. ====================================================================== ---------------------------------------------------------------------- wintermute77 - 03-26-05 00:09 ---------------------------------------------------------------------- I'm not sure how to disable dmix explicitly... ---------------------------------------------------------------------- wintermute77 - 03-26-05 00:50 ---------------------------------------------------------------------- I appear to have resolved my problem. I upgraded to 2.6.11-ck2 (which I think had a newer alsa in the kernel) and used the following dmix configuration, and it worked flawlessly (so far): /etc/asound.conf pcm.ossmix { type dmix ipc_key 1024 slave { pcm "hw:0,0" period_time 0 period_size 1024 buffer_size 4096 # buffer size < 6653, but pow(x, 2) rate 44100 # we want to play CDs only } bindings { 0 0 1 1 } } # Everything shall be dmixed, so redefine "default": pcm.!default { type plug slave.pcm "ossmix" } # OSS via aoss should d(mix)stroyed: pcm.dsp0 { type plug slave.pcm "ossmix" } ctl.mixer0 { type hw card 0 } Issue History Date Modified Username Field Change ====================================================================== 03-25-05 04:00 wintermute77 New Issue 03-25-05 04:00 wintermute77 Distribution => Gentoo 03-25-05 04:00 wintermute77 Kernel Version => 2.6.10-ck5 03-25-05 14:57 daspooky Note Added: 0004207 03-25-05 14:58 daspooky Note Edited: 0004207 03-26-05 00:09 wintermute77 Note Added: 0004214 03-26-05 00:50 wintermute77 Note Added: 0004215 ====================================================================== ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click