These symptoms are reminiscent of a noisy bus, which is nothing that ALSA or PulseAudio can work around. You may have some luck attempting to set the PCI latency.
-- [Karmic] CPU audible through laptop speakers https://bugs.launchpad.net/bugs/435725 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
