Messages in this thread | | | Date | Thu, 17 Apr 2003 21:37:13 -0600 (MDT) | From | Benson Chow <> | Subject | Re: ac97, alc101+kt8235 sound (2.4.21-pre7-ac1) |
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Seems that the VT8235 has some issues with ac97 recording. Using aumix, and setting the input to line-in, cat /dev/dsp returns the same byte over and over again, as if there is no signal. Dumping this file and dumping back to /dev/dsp confirms the silence - no sound got record. Messing around with the mixer doesn't appear to do much. The mixer subsystem, I can control the volume of line-in and line-out, and hear the volume going up and down. I also tried Windows, seems it works fine in Windows.
I tried the same command sequence on my SiS735 (i810-compatible) AC97 machine and the results differ (it works :-) So it seems that there's something that's wrong with the kt8235 side of things?
Playback works fine. Just cannot record. Is the kt8235 driver not quite primetime yet?
Thanks,
-bc
On 15 Apr 2003, Alan Cox wrote:
> Date: 15 Apr 2003 12:36:51 +0100 > From: Alan Cox <alan@lxorguk.ukuu.org.uk> > To: Benson Chow <blc+lkml@q.dyndns.org> > Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org> > Subject: Re: ac97, alc101+kt8235 sound > > On Maw, 2003-04-15 at 12:49, Benson Chow wrote: > > hoping that these via chips were pretty close. Unfortunately no, it > > still doesn't work. It did, however, find the AC97 codec fine (I added > > some printk's), but no sound is produced. Any ideas on how to get this > > vt8235-based motherboard sound working? (and ALSA-0.9.2 seems to do > > nothing but segfault it seems.) > > See 2.4.21pre - that has the driver for VIA8233/5 >
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