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From: Takashi Iwai <tiwai@suse.de>
To: Wang Lei <f3d27b@gmail.com>
Cc: linux-kernel@vger.kernel.org, Jaroslav Kysela <perex@perex.cz>
Subject: Re: [SOUND] SBx00 sound card using snd_hda_codec_analog auto mutes
Date: Fri, 11 Feb 2011 13:50:16 +0100	[thread overview]
Message-ID: <s5hlj1mburb.wl%tiwai@suse.de> (raw)
In-Reply-To: <4d552a5a.03368e0a.5890.2b59@mx.google.com>

At Fri, 11 Feb 2011 20:23:21 +0800,
Wang Lei wrote:
> 
> Thanks for your reply!
> 
> Takashi Iwai <tiwai@suse.de> writes:
> 
> > At Thu, 10 Feb 2011 20:49:51 +0800,
> > Wang Lei wrote:
> >> 
> >> On my laptop, the sound card auto mutes some seconds after i enable it.
> >> And play a audio file can't make sound. This is not a powersave feature,
> >> because i haven't enable it. I guess it's a driver problem. It occurs
> >> since 2.6.36.X. Please help.
> >
> > Then a possible cause would be the badly working interrupts.
> > Or, I remember vaguely some reports mentioning conflicts with radeon
> > driver.
> >
> > Anyway, try to reproduce without the graphic interface first.
> >
> 
> I have reproduced it without the graphic interface.
> 
> > Also, try to pass enable_msi=0 or 1.  AMD controllers tend to unstable
> > regarding MSI.
> >
> 
> And pass enable_msi=0 or 1 to snd_hda_intel, or even add boot parameter
> pci=nomsi (i actually don't know whether this is reasonable), the
> problem occurs.
> 
> I have forgot to mention this, when passing apci=off to the boot kernel,
> there is no this problem.

Then check whether the interrupt is properly generated during PCM
playback by watching /proc/interrupts.  If not, it's likely an ACPI or
BIOS problem.


Takashi

  reply	other threads:[~2011-02-11 12:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <87k4h9qpk8.fsf@f3d27b@gmail.com>
2011-02-10 12:49 ` [SOUND] SBx00 sound card using snd_hda_codec_analog auto mutes Wang Lei
2011-02-10 14:44   ` Takashi Iwai
2011-02-11 12:23     ` Wang Lei
2011-02-11 12:50       ` Takashi Iwai [this message]
2011-02-11 12:58         ` Wang Lei
2011-02-11 13:25           ` Takashi Iwai
2011-02-11 13:54             ` Wang Lei

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