Tvtime works perfectly, but the sound in myth isn't working. Took me a while, but I have just realised it's the same problem I had last time I installed myth (and I think I hacked the drivers to make it work).. it doesn't detect the sound carrier properly and chooses a 4.500 MHz, 5.500 MHz or 6.000 Mhz audio carrier at random.. and logs these to the console.
Any people out there have some experience with the saa7134 chipset under ubuntu using myth? The weirdest part is it works fine under tvtime, but not under myth.
I had the same problem, after some time i found that the problem is that myth doesnt tell the card to unmute, try this it may help solve your problem /usr/bin/v4lctl -c /dev/video0 volume mute off I did add a very small note to the wiki a couple of weeks ago about this for future reference Hope this helps Jason