Re: Intel Azalia problems

[Takashi Iwai <tiwai@suse.de>]

Hi Josh,

At Wed, 13 Apr 2005 05:07:07 -0700,
Josh Green wrote:
> 
> Hello, I recently purchased a new laptop which has an Intel Azalia sound
> interface.  I noticed that this is a pretty recent addition to the ALSA
> drivers.  Although it seems to be basically working, I'm having a couple
> problems.
> 
> The first problem has to do with the headphone jack, which on this
> laptop is an SPDIF/output combo jack. I can hear output on the built in
> speakers (after un-muting and turning up the "Front" level), but when I
> plug in headphones I don't hear anything (despite the fact that the
> "Headphone" mixer is turned up and unmuted).

Which HDA codec?  Please attach /proc/asound/card0/codec#*/* file.
(I guess it's CM9880, though..)
Anyway, try the latest CVS version.  Some improvement has been done
since rc2.

> The other problem is with certain applications which use oss.  Quake3
> for example prints the following in the terminal it is started from:
> 
> ------- sound initialization -------
> Could not mmap dma buffer PROT_WRITE|PROT_READ
> trying mmap PROT_WRITE (with associated better compatibility / less
> performance code)
> /dev/dsp: Input/output error
> Could not mmap /dev/dsp
> ------------------------------------

If your codec is CM9880, it supports only 48/96/192kHz while quake
prefers 44.1kHz.  This conflict can't be solved in the OSS mmap mode.

Try to tune via oss proc file as described in
Documentation/OSS-Emulation.txt.


Takashi


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