OK - I'll chalk this one up to the timer issue I mentioned. Taking out "nolapic_timer" from grub options has allowed pulseaudio to detect and use high precision timers and it has performed much better (lower CPU usage, concurrent streams OK) - I still get the occasional audio glitch, but I'll deal with that separately.
My boot stalls seem to be caused by some process waiting for keyboard or mouse input for generating entropy; not sure why nolapic_timer fixed that, but I'll have to live without it in favour of a functioning pulseaudio. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1533783 Title: pulseaudio crashes starting audio playback while another audio source is running To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1533783/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs