Re: 2.6.18: hda_intel: azx_get_response timeout, switching to single_cmd mode...

From: Takashi Iwai
Date: Tue Sep 26 2006 - 06:17:14 EST

At Mon, 25 Sep 2006 12:58:08 -0700,
Jeremy Fitzhardinge wrote:
> I have a ThinkPad X60 which uses the Intel 82801G HDA audio chip. This
> used to work for me, but lately (sometime during 2.6.18-rcX series) it
> stopped working - programs trying to use it tend to just block forever
> waiting for /dev/dsp.
> The only obvious symptom is:
> hda_intel: azx_get_response timeout, switching to single_cmd mode...
> appearing in the kernel log when booting.

There is no big change relevant to TP X60 during 2.6.18rc, so I don't
think it's a regression in the hd-audio driver code.

> Details attached. The dmesg output is for the FC6 distro kernel
> 2.6.18-1.2689.fc6PAE, but I see the same symptoms with 2.6.18-mm1.

You must see difference with mm1 (suppose that mm1 already includes
the latest ALSA patches). When the CORB/RIRB interrupt gets broken,
the driver first switches to poling mode, then single_cmd mode as

Also, try disable_msi=1 option for mm1. MSI seems broken on some

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