I'm having the same problem, been having it for weeks and I thought it was my hardware.
Here's where I started: mythbuntu 9.10 distribution
I tried loading it onto an Intel 8XX-chipset based P4 system first. That one had a SB live card, a K-World Phillips 7134XX-based card, an Avermedia BT868-based PCTV card (not sure which model, lost the manual!), and a Hauppauge 1950 USB.
Video, but no sound on all three. I also found that I could record shows with mythtv but they would play back without sound, so when mythtv was capturing, it wasn't getting the audio either.
I then rebuilt using an Intel D201GLY2 motherboard (Celeron) (with built-in SigmaTel audio), thinking that a newer machine would be better. Same hardware, same distribution, same results. I did have some trouble with the video display (I mean under X-windows), so I thought maybe here again, I'd be better off with a better motherboard.
I then rebuilt using an Intel DG965OT motherboard (Core 2 Duo) (with Intel HD Audio, also by SigmaTel I think), and got the same results. Then I found this thread. I have read dozens of threads, and have found no answers, but the people on this forum seem to have the most commonality with my problem.
I'm having the same problem, been having it for weeks and I thought it was my hardware.
Here's where I started: mythbuntu 9.10 distribution
I tried loading it onto an Intel 8XX-chipset based P4 system first. That one had a SB live card, a K-World Phillips 7134XX-based card, an Avermedia BT868-based PCTV card (not sure which model, lost the manual!), and a Hauppauge 1950 USB.
Video, but no sound on all three. I also found that I could record shows with mythtv but they would play back without sound, so when mythtv was capturing, it wasn't getting the audio either.
I then rebuilt using an Intel D201GLY2 motherboard (Celeron) (with built-in SigmaTel audio), thinking that a newer machine would be better. Same hardware, same distribution, same results. I did have some trouble with the video display (I mean under X-windows), so I thought maybe here again, I'd be better off with a better motherboard.
I then rebuilt using an Intel DG965OT motherboard (Core 2 Duo) (with Intel HD Audio, also by SigmaTel I think), and got the same results. Then I found this thread. I have read dozens of threads, and have found no answers, but the people on this forum seem to have the most commonality with my problem.