I have never been able to fix this problem. It's there "ever since", and
it's still here also with the latest distributions/kernel/ALSA (tried
with kernels up to 3.2.5 and latest ALSA).
That is: the bug also affect *Ubuntu 12.04 Precise Pangolin, and likely
will affect 10.10 too.
As a partial good news, there is a workaroud: if you suspend or
hibernate the machine (s2ram or s2disk), after resume you'll get audio
from the internal speakers too. Quite unconvenient, but better than
nothing.
IMVHO, this looks like a specific hardware-related problem.
if I try "alsactl init", I get this:
# alsactl init
Unknown hardware: "ICH" "Analog Devices AD1886" "AC97a:41445361" "0x0e11"
"0x007b"
Hardware is initialized using a guess method
More info: problem may be related to this piece of info:
/* We don't do a cold reset here, because this would reset general
purpose
* IO pins of the controller. These pins can be used by the machine
vendor
* to control external amplifiers, and resetting them prevents audio
output
* on some notebooks, like "Compaq Presario 2700".
*/
found here:
http://cgit.haiku-os.org/haiku/plain/src/add-ons/kernel/drivers/audio/ac97/ich/ich.c
http://cgit.haiku-os.org/haiku/plain/src/add-ons/kernel/drivers/audio/ac97/ichaudio/ichaudio.c
I guess this info should be forwarded to ALSA developers...
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https://bugs.launchpad.net/bugs/846615
Title:
[ICH - Intel 82801CA-ICH3, playback] No sound at all
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