This sounds similar to Bug 223103, Do you use CPU freq scaling ? In particular the on-demand governor. If you do, try using a different governor and see if the problem persists.
-- Chipping sound after playing music ~15 minutes https://bugs.launchpad.net/bugs/225312 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
