My MythTV Gentoo box has recently started having issues recording sound. The TV tuner re-plays audio through the "mic" interface on my soundcard. It has worked for months, but now MythTV can't read anything from /dev/dsp.
Any device that uses ALSA directly seems to work fine (like TVTime which
plays TV with audio just fine) - only those that rely on /dev/dsp seem to
have trouble. My simple test shows this:
# cat /dev/dsp > /dev/null
cat: /dev/dsp: Input/output error
This was run as root. Perms are fine:
crw-rw---- 1 root audio 14, 3 2008-10-03 08:56 /dev/dsp
Myth user is in audio group (always has been).
Has something changed in ALSA that I didn't catch? I don't see anything in
my logs or dmesg that shows a problem. My /etc/asound.conf is as follows:
pcm.nforce-hw {
type hw
card 0
}
pcm.!default {
type plug
slave.pcm "nforce"
}
pcm.nforce {
type dmix
ipc_key 1234
ipc_perm 0660
slave {
pcm "hw:0,0"
period_time 0
period_size 1024
buffer_size 4096
#rate 44100
rate 48000
}
}
ctl.nforce-hw {
type hw
card 0
}
I have tried without this asound.conf and see the same issue.
--
// Andrew MacKenzie | http://www.edespot.com
// GPG public key: http://www.edespot.com/~amackenz/public.key
// I've touch'd the highest point of all my greatness;
// And from that full meridian of my glory
// I haste now to my setting. I shall fall,
// Like a bright exhalation in the evening
// And no man see me more.
// -- Shakespeare
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