Sounds very similar to my experience. I did an online upgrade from Jaunty to Karmic two days ago. No sound problems before but masses after.
When playing video (using Kaffeine) sound would be ok for 3 to 20 minutes then disappear into clicks, followed by silence. Using 'System Setting -> Multimedia' I told the system to use the CMI8738 module rather than pulseaudio & this appeared to cure the problem, for a day. When playing games (Vendetta Online) the system degenerates into clicks after 5 - 20 seconds, shortly followed by complete silence. Possibly related, as this problem cropped up at the same time, when I try to exit the game the system locks up & I have to do a hard reset. Before the sound problem VO behaved perfectly. Now, on system startup, KDE reports that the modules have been removed leaving only pulseadio available. I tried to get more debug info but there a other problems (display settings on startup, dpkg currently unusable) confusing the issue. My hardware is:- AMD Phenom x4 CPU nVidia GeForce 8200 chipset. Added CMI8738 sound card as onboard sound was low quality. Have switched off onboard sound in the BIOS. Cheers, Kimdino -- sound stops and begins clicking and popping https://bugs.launchpad.net/bugs/476652 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
