I just want to add some more information to my original post. Doing
an strace on amixer shows the following (last several lines of total output):
...
stat("/usr/local/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=8967, ...}) = 0
open("/usr/local/share/alsa/alsa.conf", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=8967, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c506a6000
read(3, "#\n# ALSA library configuration "..., 4096) = 4096
read(3, "\t}\n\t\t}\n\t}\n\t@xxxxxxxx {\n\t\ttype in"..., 4096) = 4096
read(3, " {\n\t\t@func refer\n\t\tname defaults"..., 4096) = 775
read(3, "", 4096) = 0
read(3, "", 4096) = 0
close(3) = 0
munmap(0x7f1c506a6000, 4096) = 0
futex(0x7f1c4fef70e0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
access("/etc/asound.conf", R_OK) = -1 ENOENT (No such file or directory)
access("/root/.asoundrc", R_OK) = 0
open("/root/.asoundrc", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=378, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c506a6000
read(3, "pcm.headphonesplug {\n type plug\n"..., 4096) = 378
read(3, "", 4096) = 0
read(3, "", 4096) = 0
close(3) = 0
munmap(0x7f1c506a6000, 4096) = 0
open("/dev/snd/controlC0", O_RDONLY|O_CLOEXEC) = -1 ENODEV (No such device)
open("/dev/aloadC0", O_RDONLY|O_CLOEXEC) = -1 ENODEV (No such device)
write(2, "amixer: ", 8amixer: ) = 8
write(2, "Mixer attach default error: No s"..., 42Mixer attach default error: No such device) = 42
write(2, "\n", 1
) = 1
exit_group(1)
For some reason, the /dev/snd/controlC0 and /dev/aloadC0 devices are not being
found although both devices exist on my system:
ls -l dev/snd/controlC0 dev/aloadC0
crw-rw---- 1 root root 116, 0 Apr 22 2009 dev/aloadC0
crw-rw---- 1 root root 116, 0 Apr 22 2009 dev/snd/controlC0
As I already mentioned, rebooting into kernel-2.6.36 with the same configuration
gives normal alsa sound.
Frank Peters
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