[LAD] 2.6.31.x vs. rme vs. alsa 1.0.22?

Raphaël Doursenaud rdoursenaud at free.fr
Wed Feb 17 05:30:40 UTC 2010

Hash: SHA1

Le 17/02/2010 02:58, Fernando Lopez-Lezcano a écrit :
> Hey, has anyone been seeing strange behavior from this combination?
>   kernel 2.6.31.x rt20 + alsa 1.0.22 userland
>   RME card (pcmcia card + multiface)
> hdspmixer is not doing the right thing (does not initialize the card in
> a way in which playback works), it does not see the hwdep interface (or
> something like that) and disables metering, alsamixer even segfaults
> when I reach the end of the controls listed. Plain weird. Smells like
> something changed deep in the kernel that makes alsa-lib very unhappy.
> Alsa-tools rebuilt from source does not make a difference. 
> Weirdness goes away when I boot into rt23...
> Is there anything in alsa-* that depends on which _kernel_ is available
> at compile time?
> -- Fernando


I'm actually using a similar combination on my gentoo without problem
(PCI card).

AFAIK the only difference between 2.6.30 and 2.6.31 for the hdsp is a
patch I made allowing the firmware to be built inside the kernel. It
should not have this kind of side-effect.

I'll check on my notebook with the PCMCIA card as soon as I can.

If you're using a custom built kernel you might want to try with the
firmware built-in.

- -- 
Raphaël Doursenaud
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