[ltp] Still having problem with thinkpad-acpi's BEEP and kernel > 2.6.30

[Henrique de Moraes Holschuh]

On Mon, 02 Nov 2009, kionez wrote:
> #include <Arian Kuschki.h>   // created 31/10/2009 15:25
>  > Haven't been following this thread so I am not sure what you mean, but
> > on my t42 when I pull the power cord out it beeps.
> > a ~$ uname -r
> > 2.6.31-ARCH
> 
> oh, interesting... In this thread I can't figure if is mine problem or
> is an alsa issue.. but if your "firmware beeps" works fine, well.. i
> suppose that's something wrong in my config... ;)

It is ALSA, and it is related to HDA audio, and not AC97 audio.  So you
should pay attention to success/failure reports only from ThinkPads with HDA
audio.  The T42 is AC97.

I believe we tracked it down to ALSA switching the HDA mixer+codec to
"digital beeps" or whatever, which is incompatible with the signal path used
by the firmware.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh