Here's my initial mail, but with gzipped outputs.

Regards, Colomban

-------- Message original -------- Sujet: Re: [alsa-devel] Realtek ALC889: HDA Intel and kernel 3.1 gives choppy sound (again) Date : Thu, 10 Nov 2011 02:11:17 +0100 De : Colomban Wendling lists.ban@herbesfolles.org Pour : Takashi Iwai tiwai@suse.de Copie à : alsa-devel@alsa-project.org

Hi again, and sorry for the delay.

Le 08/11/2011 07:32, Takashi Iwai a écrit :

At Mon, 07 Nov 2011 23:45:40 +0100, Colomban Wendling wrote:

...

Hi,

Back to 3.0, the sound on my soundcard [1] started to be choppy, I reported it [2] and it got fixed (thanks to Takashi Iwai!).

However, the story repeated with 3.1 (and probably 3.0.8 or before [3]): I've got similar choppy sound again.

I bisected the few commits that happened on sound/pci/hda/patch_realtek.c, and finally found the villain:

"8974bd51 ALSA: hda/realtek - Fix auto-mute with HP+LO configuration"

Reverting it from v3.1 fixes the problem.

Does it? Very weird. This patch has nothing to do with the HD-audio controller side but purely a codec change.

Yep, I just check once again and it really fixes the problem here.

...

master (94956ee) also suffers of the problem, but I couldn't test without that commit because reverting it fails, too much changes happened.

Did you try to pass position_fix=1 (or 2) option? Also, passing enable_msi=0 (or 1) may change anything?

I just tried with the 3 kernels:

* vanilla v3.1 * vanilla 3.2-rc1 (master at 1ea6b8f) * v3.1 with 8974bd51 reverted

and none of the option changed anything: both vanilla always failed, the third always succeeded. Though, I haven't combined the options, just tried each at once.

In anyway, please give alsa-info.sh output again with the fresh kernel. Run it with --no-upload option and attach the output.

Here it is, for the 3 kernels cited above.

Regards, Colomban