At Thu, 30 Jan 2003 01:48:18 +0200, Antti Boman wrote: > > Thanks, Takashi! I'll get back to these Friday night, as I'm way too > busy before that. There are some things included below: > > Takashi Iwai wrote: > > at first, please check which chip model you are using and get the > > register dump from /proc/asound/card0/cmipci. > > I thought I sent the chip model to the mailing list, but that was > actually one of the off-list messages. The model seems to be "C-Media > PCI CMI8738-MC6 (model 55)", as the dump of /proc/asound/card0/cmipci > here tells: ok, then the chip model is the same one as i have now.
> >>I've gathered the key information here: > >> > >>- The sound when playing back is totally garbled, the pitch is lower > >> than the original, and I get lots of clicking alongside. If I'm not > >> using jack but alsa output, everything (playing and recording) is ok. > >> > >>- I have the lowlat patch installed in kernel, but using or not using it > >> doesn't seem to change anything. > > > > most likely the kernel scheduler is irrelevant. > > The only effect it had was locking the whole machine when using > playback/capture only. do you mean with LL-patch? or with preempt patch? > >>- Using jackd with playback/capture only, it produces the following > >> message: > >> jackd: pcm.c:5851: snd_pcm_mmap_commit: Assertion 'pcm' failed > > > > that's weird. > > Yes, and as you most probably know, it refers to alsa-lib/src/pcm/pcm.c if the above function is directly called from jack, then it should be a bug of jack. the error above says the passed argument is a null pointer. > Oh, btw, I'm using alsa 0.9.0rc6, and as root (which you obviously > already gathered from me using lowlatency patches). > > Kernel 2.4.19 with AMD Athlon. > > >>- If using kernel real-time patches with playback/capture only, the > >> system locks up. This doesn't happen with both capture and playback > >> enabled. > > > > i can't produce this on my machine... > > Here it does the same thing every time. ah, sorry, what do you mean "kernel real-time patches"? preempt-patch? then i don't know. i don't use them together with 2.4 kernels. Takashi ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
