I use alsa sound with SuSE 7.3 on my new laptop, which has an Intel 815 or
compatible chipset. For a couple of reasons I am upgrading SuSE's 2.4.10
kernel to a more recent one, but I have encountered problems.
First of all, i810 sound is completely broken in the latest stable kernel,
which is 2.4.16. Of course 2.4.15 is unusable because of the umount bug.
I have been using the 2.4.17-preX series, since the changelog to -pre1
mentioned a fix to the broken i810 sound.
The basic sound driver operates as it should. The problem that I am
seeing is that something has broken the mixer. When calling alsactl to
load or store mixer settings, I get the following error:
# alsactl store
alsactl: MIXER open error: Invalid argument
#
When calling alsamixer I get this:
# alsamixer
alsamixer: failed to open mixer #0/#0: Invalid argument
#
I used strace to track the source of the problem and it seems to be
here:
# strace alsactl store
execve("/usr/sbin/alsactl", ["alsactl", "store"], [/* 82 vars */]) = 0
....... etc ......
open("/dev/snd/mixerC0D0", O_RDWR) = 4
ioctl(4, RNDGETENTCNT, 0xbffff268) = -1 EINVAL (Invalid argument)
close(4) = 0
....... dies .....
In 2.4.10, the same produces instead:
open("/dev/snd/mixerC0D0", O_RDWR) = 4
ioctl(4, RNDGETENTCNT, 0xbffff274) = 0
ioctl(4, 0xc0105210, 0xbffff2cc) = 0
ioctl(4, 0xc0105210, 0xbffff2cc) = 0
....... etc .......
ioctl(4, 0xc0985220, 0x805a530) = 0
ioctl(4, 0xc0985220, 0x805a668) = 0
close(4)
Any hints would be very much appreciated. I can make changes to my
local build, but perhaps there is still some bug in the kernel that
should be fixed.
Best,
--
Leif Jensen
[EMAIL PROTECTED], Mathematics Department, Columbia Univ.
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