Hello,
My Alsa OSS emulation isn't working and I don't know where to begin to try
to diagnose the problem. All appropriate kernel modules seem to be
installed and all necessary support libraries seem to be present (see
below for versions). When an OSS sound app tries to play sound, it
freezes and sometimes returns an error similar to the following (for a
game using SDL OSS interface):
"SDL: Audio timeout - buggy audio driver? (disabled)
audio: Bad file descriptor"
When I exeucte "aplay testsound.wav" it plays find, but "strace -f play
testsound.wav": hangs:
. . .
[pid 16226] open("testsound.wav", O_RDONLY) = 3
[pid 16226] fstat64(3, {st_mode=S_IFREG|0644, st_size=1411244, ...}) = 0
[pid 16226] fstat64(3, {st_mode=S_IFREG|0644, st_size=1411244, ...}) = 0
[pid 16226] mmap2(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40018000
[pid 16226] read(3, "RIFF\244\210\25\0WAVEfmt
\20\0\0\0\1\0\1\0D\254\0\0\210"..., 4096) = 4096
[pid 16226] _llseek(3, 0, [0], SEEK_SET) = 0
[pid 16226] read(3, "RIFF\244\210\25\0WAVEfmt
\20\0\0\0\1\0\1\0D\254\0\0\210"..., 4096) = 4096
[pid 16226] _llseek(3, 4096, [4096], SEEK_SET) = 0
[pid 16226] _llseek(3, 1409024, [1409024], SEEK_SET) = 0
[pid 16226] read(3,
"P\20\341\17\351\16\222\r\37\f,\v;\v\33\f\0\r]\rC\r\377"..., 4096) = 2220
[pid 16226] read(3, "", 4096) = 0
[pid 16226] _llseek(3, 0, [0], SEEK_SET) = 0
[pid 16226] read(3, "RIFF\244\210\25\0WAVEfmt
\20\0\0\0\1\0\1\0D\254\0\0\210"..., 44) = 44
[pid 16226] open("/dev/dsp", O_WRONLY|O_CREAT|O_TRUNC, 0666
[never returns]
Can anyone suggest a way to identify the problem? Native Alsa apps work
great. OSS emulation has worked in the past.
Here are the version details:
# lsmod | grep snd
snd-seq-oss 31232 0
snd-seq-midi-event 7552 1 snd-seq-oss
snd-seq 51024 4 snd-seq-oss,snd-seq-midi-event
snd-pcm-oss 51812 0
snd-mixer-oss 17952 1 snd-pcm-oss
snd-intel8x0 32776 0
snd-ac97-codec 58148 1 snd-intel8x0
gameport 4480 1 snd-intel8x0
snd-mpu401-uart 7072 1 snd-intel8x0
snd-usb-audio 64672 0
snd-rawmidi 23616 2 snd-mpu401-uart,snd-usb-audio
snd-seq-device 8008 3 snd-seq-oss,snd-seq,snd-rawmidi
snd-pcm 93156 3 snd-pcm-oss,snd-intel8x0,snd-usb-audio
snd-page-alloc 11972 2 snd-intel8x0,snd-pcm
snd-timer 24484 2 snd-seq,snd-pcm
snd 52484 13
snd-seq-oss,snd-seq-midi-event,snd-seq,snd-pcm-oss,snd-mixer-oss,snd-intel8x0,snd-ac97-codec,snd-mpu401-uart,snd-usb-audio,snd-rawmidi,snd-seq-device,snd-pcm,snd-timer
soundcore 9248 3 snd,audio
usbcore 99132 7 hid,snd-usb-audio,pwc,audio,uhci-hcd
# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.2c (Thu Feb 05
15:41:49 2004 UTC).
Compiled on Mar 2 2004 for kernel 2.6.3-4mdk.
# rpm -qa | grep libalsa-oss
libalsa-oss0-devel-1.0.2-3mdk
libalsa-oss0-1.0.2-3mdk
Should I get off the bleeding edge?
Thanks!
Rich Drewes
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