linux-kernel - Re: 2.6.29 regression: left audio channel broken after resume from suspend with Intel HDA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 24 Apr 2009 16:41:14 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Tino Keitel <tino.keitel@...ei.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

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...


> Attached is an example diff.

This diff looks OK.  The difference is just the current PCM stream
you are playing.  Others are identical.


thanks,

Takashi
--
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/