linux-kernel - Re: [alsa-devel] linux-next

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Date:	Thu, 02 Apr 2015 22:21:40 -0400
From:	Valdis.Kletnieks@...edu
To:	Hui Wang <hui.wang@...onical.com>
Cc:	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] linux-next - strange audio bug

On Fri, 03 Apr 2015 08:44:12 +0800, Hui Wang said:

> It sounds like the suspend or resume of power management introduces this
> problem. Probably you could reproduce this problem very soon just
> repeatedly suspend and resume the system.

I don't do suspend on this laptop, I poweroff and reboot when I get
wherever I'm going.

However... device-level power management? Hmm..  I *do* remember that
each time I found it dead, I was coming back to my laptop from doing something
else, so the sound would have been idle....

commit c4c2533f802d6877803c4d778def43d8a122f27b
Author: Takashi Iwai <tiwai@...e.de>
Date:   Tue Mar 3 17:22:12 2015 +0100

    ALSA: hda - Fix possible runtime PM refcount unbalance

That landed in next-20150324 - which is broken for me.

Looks worth trying a revert before I bisect, thanks for the hint, will
report back (probably tomorrow) on what happens...

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