linux-kernel - Re: Powersave doesn't work for snd_hda

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Date:	Wed, 15 Jun 2011 08:22:46 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Pavel Machek <pavel@....cz>
Cc:	Michal Hocko <mhocko@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org
Subject: Re: Powersave doesn't work for snd_hda_intel with 3.0.0-rc2

At Wed, 15 Jun 2011 06:08:18 +0000,
Pavel Machek wrote:
> 
> On Fri 2011-06-10 10:39:56, Michal Hocko wrote:
> > [changed subject]
> > 
> > As a summary:
> > I am loosing sound after powe_save timeout expires if there is no device
> > activity. The only way how to get sound back is to unload the module and
> > load it again.
> 
> Hmm, today my x60 with 3.0-rc was strangely quiet. Coincidence?

quiet = no sound at all, or softer volume?

If it's about a mixer or an EAPD issue, you should be able to see
differences by comparing alsa-info.sh outputs at working and non-working
states.  This is the most cases of powersave-mode bugs.


thanks,

Takashi
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