Re: auich fifo underrun

[Kouichirou Hiratsuka <hira%po6.nsk.ne.jp@localhost>]

Hello,

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).

  http://www.NetBSD.org/cgi-bin/query-pr-single.pl?number=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
   hira%po6.nsk.ne.jp@localhost