linux-kernel - Re: [2.6.30-rc1-git2 regressions] Hibernation broken and (minor but annoying) audio problem

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Message-Id: <200904152259.10473.rjw@sisk.pl>
Date:	Wed, 15 Apr 2009 22:59:09 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [2.6.30-rc1-git2 regressions] Hibernation broken and (minor but annoying) audio problem

On Wednesday 15 April 2009, Takashi Iwai wrote:
> At Tue, 14 Apr 2009 23:12:33 +0200,
> Rafael J. Wysocki wrote:
> > 
> > On Tuesday 14 April 2009, Takashi Iwai wrote:
> > > At Fri, 10 Apr 2009 00:57:41 +0200,
> > > Rafael J. Wysocki wrote:
> > > > 
> > > > Second, KDE4 on openSUSE 11.1 sometimes fails to handle audio correctly after
> > > > a fresh boot.  Everything seems to work, but there's no sound at all.  It is
> > > > sufficient to close the X session and start the desktop environment again to
> > > > make it work, though (may that be async too? ;-)).  The hardware in question is
> > > > Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller
> > > > (rev 02) and the driver is snd_hda_intel.
> > > 
> > > Is this problem still there?
> > 
> > Just a few minutes ago sound stopped working (that was after a resume from S3,
> > but not immediately after it), without anything suspicious in dmesg etc.
> > Restarting X fixed that.
> > 
> > Still, that doesn't happen very often and it is not readily reproducible.
> > 
> > > If restarting the X session fixes the problem, it could be a
> > > pulseaudio problem.  But, then it doesn't sound like a kernel update
> > > issue.
> > 
> > Well, that may be a pulseaudio problem, but the very same pulsaudio apparently
> >  worked well with 2.6.29-git<something>.  That might be a coincidence, though.
> 
> 2.6.30-rc[12] have some patches regarding the DMA pointer handling,
> which may influence on PA.  More fix patches are pending.  Could you
> try sound git tree either master or for-next branch?  At least it
> seems working for some others.
>     git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git

I'm going to try 2.6.30-rc2-git in a while.  If I have the time, I'll also test
the sound git tree.

Thanks,
Rafael
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