[alsa-devel] Intel ICH7/Realtek ALC262 on MSI MS-7290 (Crystal 945)

[Matthew R. Hurne]

Matthew R. Hurne wrote:
> Greetings,
> 
> I am running Linux on an MSI Crystal 945, which has a highly-integrated
> MS-7290 mainboard.  This board includes an Intel ICH7 southbridge and a
> Realtek ALC262 codec.  The board has integrated microphone, line-in and
> line-out jacks (labeled AUDIO-JK1 on the board).  In addition, the unit
> has internal speakers.  The speakers are connected to an MSI MS-4088; a
> small board which also hosts the unit's power button.  The MS-4088 is
> connected to the MS-7290 mainboard with some bundled wires.
> 
> ALSA appears to accurately determine that the unit has an ICH7 and
> ALC262, and I am able to use alsamixer to adjust levels.  I am also able
> to use aplay without any reported errors.  However, no audio is heard
> from the units internal speakers.  I have passed every possible model
> (as listed in ALSA-Configuration.txt) to the ALSA driver
> (snd-hda-intel), to no avail.  For some of the models (or perhaps all; I
> unfortunately did not pay close attention to this detail), audio IS
> heard through headphones plugged in to the unit's line-out jack.
> However, the audio heard is at an extremely low volume, even if all the
> mixer levels are unmuted and set to 100%.  Note that if the driver is
> loaded without specifying a model, or when specifying "model=auto", I
> see the following from dmesg:
> 
> hda_codec: Unknown model for ALC262, trying auto-probe from BIOS...
> 
> 
> I have tried the following versions of ALSA: 1.0.14, 1.0.15, 1.0.16rc1.
> The unit is running Linux kernel version 2.6.15.7-kiosk-1; it is vanilla
> 2.6.15.7 patched for unionfs, squashfs and bootsplash.
> 
> I am attaching the contents of /proc/asound/card0/codec#0 and lspci -vv.
>  I also have a graph generated by codecgraph, but won't attach it now
> since it will cause my message to be large enough to await moderator
> approval.
> 
> 
> The version of GCC used to compile ALSA is 3.3.5:
> 
> root at kiosk:~# gcc -v
> Reading specs from /usr/lib/gcc-lib/i486-slackware-linux/3.3.5/specs
> Configured with: ../gcc-3.3.5/configure --prefix=/usr --enable-shared
> --enable-threads=posix --enable-__cxa_atexit --disable-checking
> --with-gnu-ld --verbose --target=i486-slackware-linux
> --host=i486-slackware-linux
> Thread model: posix
> gcc version 3.3.5
> 
> 
> I would not be surprised if this is a board configuration the ALSA team
> has not yet dealt with.  As far as I can tell, the MS-7290 was designed
> specifically for the Crystal 945 barebones unit, so its probably not in
> widespread use.  Is there someone who would be willing to work with me
> to get this working?  Just let me know what you need, and I'll do my
> best to provide it.
> 
> BTW, I did have to "hack" the alsa-driver 1.0.16rc1 source to get the
> various ALSA kernel modules to load (removed unresolved references to
> do_posix_clock_monotonic_gettime; I think tiwai's fix in
> include/adriver.h could be applied elsewhere, but I just removed the
> references altogether).

Bug reported:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3725