linux-kernel - Re: [alsa-devel] [3.6.9 -> 3.7.1 regression] sound: snd_hda

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Date:	Tue, 08 Jan 2013 15:39:07 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	David Henningsson <david.henningsson@...onical.com>
Cc:	Vincent Blut <vincent.debian@...e.fr>, alsa-devel@...a-project.org,
	Maurizio Avogadro <mavoga@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [3.6.9 -> 3.7.1 regression] sound: snd_hda_intel codec probing issue?

At Tue, 08 Jan 2013 15:32:13 +0100,
David Henningsson wrote:
> 
> On 01/08/2013 01:56 PM, Takashi Iwai wrote:
> >> I'll test with enable_msi=0 later.
> >
> > Thanks.
> >
> > FWIW, below is a patch I'm considering to merge (after testing, of
> > course).  Could you buys check it?
> >
> >
> > Takashi
> >
> > ---
> > From: Takashi Iwai <tiwai@...e.de>
> > Subject: [PATCH] ALSA: hda - Disable runtime D3 for Intel CPT & co
> 
> For reference, I'm seeing some of this too, and have asked for people to 
> test with enable_msi=0 and/or power_save_controller=0. I'm waiting for 
> replies from people with the hardware.

OK, good to know!

So far, I disabled the runtime PM up to PantherPoint in the patch.
LynxPoint, Haswell and 3400 are still with runtime PM, as these were
the platforms mostly tested for the feature.


Takashi
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