[mythtv-users] Sound not working

[PAUL WILLIAMSON]

I was fine with most of my MythTV functionality (schedule, record, 
watch TV, etc.) up until last night.  My backend crashed and 
completely froze up the machine.  I'll deal with that later, but I had

to unplug the machine to get it to power down.  When I brought it 
back up, ran fsck and no problems were found.  However, now on 
boot, I get the following message:

Start Service mdmonitor: MTDLogger.o: Problem opening logfile.  
Does this look openable to you: /var/lib/mythdvd/temp/mtd.log

The file is not present in that directory, and all paths up to that 
location are at least 755.

Oddly enough now I get no sound when trying to watch TV or 
any recordings.  I get this nice little message saying "/dev/dsp is 
not available, do I want to continue without sound?"  If I 
try aplay <known-good-mp3> from the command line, all I get 
is static.

I've rebooted a few times with the exact same result.  Is there 
some switch I can turn on for more debug info?  I've done a 
ps -ef|grep 'dsp' and get no hits, so it doesn't look like 
anything is actually using /dev/dsp.

Thanks for any help,
Paul