linux-kernel - Re: 2.6.29.1: hda-intel: IRQ timing workaround is activated for card

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Date:	Wed, 13 May 2009 08:51:46 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.29.1: hda-intel: IRQ timing workaround is activated for card

At Mon, 11 May 2009 08:33:08 -0400 (EDT),
Justin Piszcz wrote:
> 
> Hello,
> 
> Kernel: 2.6.29.1
> Distribution: Debian Testing
> 
> Once and awhile I see this:
> 
> [2916854.550302] hda-intel: IRQ timing workaround is activated for card #0.
> Suggest a bigger bdl_pos_adj.
> 
> I do not recall seeing it often (if at all < 2.6.27-8) is this anything to
> be worried about?

No big worry about that.  It must be some spontaneous hardware error
that one can see on many HD-audio controllers.
If it's too annoying, you can disable the workaround via bdl_pos_adj=0
option.  But this may lead to a problem with some audio apps like
JACK.


Takashi
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