Hi Vladimir, I have written a small program to show the channel scrolling problem on the nforce 2 chipset.
James tested it on his system and the problem did not occur. I tested it on an Intel/Analog devices system the problem does not occur. It is specific to the nforce2 chipset. I was wrong when I said it occurred on the intel system (There is another problem I am tracking down in my code which does occur on both). I am going to try to track down and fix the problem, but I have a fair bit of learning to do before I will be able to figure it out. Richard. On Fri, 2003-11-14 at 01:48, Vladimir I. Umnov wrote: > On Mon, 10 Nov 2003 23:35:13 +0000 > James Courtier-Dutton <[EMAIL PROTECTED]> wrote: > > > 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. > try to open/close (without seeking) in mplayer or xine - always scrolls > to next position (i think 3 positions at all). > > > ------------------------------------------------------- > 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/ > _______________________________________________ > Alsa-devel mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-devel ------------------------------------------------------- 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/ _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
