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Date: Tue, 28 Apr 2009 02:23:09 +0200 From: Tino Keitel <tino.keitel@....de> To: Takashi Iwai <tiwai@...e.de> Cc: linux-kernel@...r.kernel.org, alsa-devel@...a-project.org Subject: Re: 2.6.29 regression: left audio channel broken after resume from suspend with Intel HDA On Fri, Apr 24, 2009 at 16:41:14 +0200, Takashi Iwai wrote: > At Fri, 24 Apr 2009 16:21:13 +0200, > Tino Keitel wrote: > > > > On Fri, Apr 24, 2009 at 16:01:40 +0200, Takashi Iwai wrote: > > > > [...] > > > > > The codec communication looks a bit unstable on this device... > > > Does this still happen on the latest 2.6.30 version? > > > > Yes, at least with 2.6.30-rc3. I reloaded snd-hda-intel a few times, > > and at some point /etc/init.d/alsa-utils start complained, I guess > > because some index numbers in the mixer changed. > > And this happens because the codec doesn't respond properly any more. > So, something triggers to screw up the communication with the codec. > I have no idea right now. Possibly you can bisect the changes against > sound/pci/hda/patch_sigmatel.c... The problem is that I don't have a reliable way to trigger this bug. It just happens sometimes. I just saw another, major problem: line in doesn't work anymore with 2.6.29 and also 2.6.30-rc3 (no usable input level). It works with 2.6.27.20. So it seems that all newer kernels are pretty broken on this hardware regarding sound. Regards, Tino -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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