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SubjectRe: 2.6.33.1 regression: sound splutters
At Thu, 01 Apr 2010 16:52:28 +0200,
Harald Dunkel wrote:
>
> On 04/01/10 11:39, Takashi Iwai wrote:
> >
> > OK, what about enable_msi=0 option for snd-hda-intel module?
> >
>
> Now it works.
>
> I have no idea what this enable_msi thing is about, but according
> to Documentation/sound/alsa/ALSA-Configuration.txt it should be off
> by default.

This was enabled as default but for Nvidia controller since 2.6.33.
I'll need to update the document, too...

> Would you suggest to make this change permanent?

Apply the patch like below. Replace "Unknown PC" with something more
useful.

Could you tell more details about your machine, which vendor, product
name etc to fill there? Then I'll commit the fix to the upstream.


thanks,

Takashi

---
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b185afd..f45ab94 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2366,6 +2366,7 @@ static struct snd_pci_quirk msi_black_list[] __devinitdata = {
SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
+ SND_PCI_QUIRK(0xa0a0, 0x0575, "Unknown PC", 0), /* Unknown PC */
{}
};



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