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Re: auich fifo underrun


At Tue, 12 Feb 2008 13:12:45 +0000,
Patrick Welche wrote:
> On an i386 box with
> auich0 at pci0 dev 30 function 2: i82801FB (ICH6) AC-97 Audio
> auich0: interrupting at ioapic0 pin 23 (irq 10)
> auich0: ac97: Analog Devices AD1981B codec; headphone, 20 bit DAC, no 3D 
> stereo
> auich0: ac97: ext id 601<AC97_22,AMAP,VRA>
> auich0: measured ac97 link rate at 48000 Hz
> audio0 at auich0: full duplex, mmap, independent
> all is well with a kernel of Feb 8, but with today's kernel, I get
> auich0: fifo underrun
> and all freezes (wasn't playing music, and was just logging in via xdm)
> (Just FYI - building a diagnostic kernel now...)

I sent a PR about this (kern/37757).

I don't know how to fix the problem.  However, rev. 1.119 of auich.c
works fine for me.

best regards.
 Kouichirou Hiratsuka

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