I've found a workaround for this issue: http://forums.gentoo.org/viewtopic-p-4291307.html?sid=2d09aabef90429f5465f9ee35f12456e#4291307
Specifically, setting the playback mode under System->Preferences->Sound to "ALSA - Advanced Linux Sound Architecture" instead of "AD198x Analog" and creating setting up /etc/asound.conf as follows: pcm.upmix_4ch { type plug slave.pcm surround40 slave.channels 4 route_policy duplicate } pcm.default upmix_4ch Unfortunately, this has the side effect of restricting me to a single application using audio at any given time, but will have to do until ALSA bug #2889 is fixed. -- High pitch whine on left audio channel with Asus K8N-VM https://bugs.launchpad.net/bugs/156540 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs