Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 23 Apr 2001 11:03:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 23 Apr 2001 11:03:02 -0400 Received: from mail-oak-2.pilot.net ([198.232.147.17]:64209 "EHLO mail02-oak.pilot.net") by vger.kernel.org with ESMTP id ; Mon, 23 Apr 2001 11:02:49 -0400 Message-ID: <973C11FE0E3ED41183B200508BC7774C0124F187@csexchange.crystal.cirrus.com> From: "Woller, Thomas" To: "'David'" , linux-kernel@vger.kernel.org Subject: RE: 2.4.3+ sound distortion Date: Mon, 23 Apr 2001 10:01:45 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org David, your report sounds like a problem that we have seen in the test lab, but no one has reported in the field... yet. :) if the problem is the same as we have seen... unloading the driver and reloading the driver should also clear up the problem. but typically the problem only occurs after playing for several hours without a break in the audio stream. we think that we understand the problem (theoretically), in that we believe that we need to manipulate a static DSP image location periodically that gets too far out of value. the issue is that internal variables for the static DSP image are not reinitialized on a task restart (e.g. restarting up an audio stream). reloading the static image (i.e. suspend/resume or reloading the driver) clears up the tinny sound here. it hadn't been reported, so I haven't taken the time to plough through the static image map to try to figure out where all the locations are for all the task images that need manipulation. might take a while, but since we now have a problem report, i'll try to find some time to start negotiating the DSP map. i'll send the fix to you for testing when/if... i can get the problem resolved. thanks tom twoller@crystal.cirrus.com > -----Original Message----- > From: David [SMTP:david@blue-labs.org] > Sent: Sunday, April 22, 2001 10:08 PM > To: linux-kernel@vger.kernel.org > Subject: Re: 2.4.3+ sound distortion > > I have noticed a problem with sound lately. I have a cs46xx card and > it randomly gets distorted. Normally I just reboot but on this last > occurence I simply left it as it was. The distortion sounds someone > punched the speaker core, it's tinny and mangled. Today it fixed itself > out of the blue in the middle of playing a sound. All sound programs are > equally affected. > > It's only done this in the 2.4 series, I haven't had the desire to look > into it. > > David > > Mike Castle wrote: > > >On Sat, Apr 21, 2001 at 06:04:47PM +0200, Victor Julien wrote: > > > >>I have a problem with kernels higher than 2.4.2, the sound distorts when > > >>playing a song with xmms while the seti@home client runs. 2.4.2 did not > have > >> > > > >Would this be the same issue as describe in these threads: > > > >http://www.uwsg.indiana.edu/hypermail/linux/kernel/0104.0/0233.html > >http://www.uwsg.indiana.edu/hypermail/linux/kernel/0104.1/0231.html > > > >That is, the change in how nice is recalculated. > > > >mrc > > > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/