try ubuntu 14.10 or 14.04 LTS LiveCD and check whether those iommu oops occur or not
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1453282 Title: [Neither headphones nor speakers are displayed under "All Settings"->Sound, VIA VT1718S, Green Headphone Out, Front] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1453282/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
