From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Courtier-Dutton Subject: Re: nforce2 (snd_intel8x0) channels scrolling Date: Mon, 10 Nov 2003 23:35:13 +0000 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <3FB020B1.4090406@superbug.demon.co.uk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Richard Lemon Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Richard Lemon wrote: > Hi All, > > This is one of the problems I have been seeing with the intel8x0 driver as well. The problem occurs when you call snd_pcm_start a second time after an xrun, or after you have shut down a program with ctl-c and started it again in the same console. I used the > > If you close the console and open a new one the problem seems to go away!? I used the example code pcm.c from the alsa-lib test directory. > > It occurs with both [nforce2 ALC650] combo and [Intel 82901EB-ICH5 Analog devices id 75]. > > I also have a problem when the drivers have been running for a long time (around 5 hours). Without an xrun the snd_pcm_delay() function starts returning impossible numbers. Checking drift against either rdtsc or gettimeofday() alsa starts giving me a 0.1 second per second drift. > > I haven't got a machine I can set up for this style of kernel debugging unfortunately, so I am trying to code around these problems. > > richard. > > Would you be able to submit a small self contained (like the speaker-test code I submitted) source code that would reproduce the problem quickly. I would expect that writing code to force xruns would be quite easy. I have a ICH5 with ALC650 chip on Motherboard here, so I might be able to help you out if I could reproduce your problem. Cheers James ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/