I believe I have the same problem on my Lenove X1 Carbon with 12.10 Xubuntu. In particular, the following might be of interest:
- The problem did not occur after initial installation, but after some time (could be related to updates). - The problem does not occur after initial boot. It will occur (a) after disconnecting the power supply and going to battery (b) resuming from battery. So far my workaround is a reboot, which only takes 10s on this machine. It is still very annoying. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/879790 Title: Sound doesn't play properly after upgrade from 11.04->11.10, also affects 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/879790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs