Hi all again. First, thanks Josh for your suggestion.
Sridhar suggested checking dmesg, which I found: [ 4.054115] snd_hda_intel 0000:01:00.1: Handle VGA-switcheroo audio client [ 4.054117] snd_hda_intel 0000:01:00.1: Force to non-snoop mode Then looking in syslog I found: Nov 16 20:41:04 patrick-desktop kernel: [ 4.109628] snd_hda_intel 0000:00:1f.3: failed to add i915_bpo component master (-19) So, doing a Google I found: http://ubuntuforums.org/showthread.php?t=2293912 Which lead to: https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS Which suggested: sudo apt-get install dkms followed by a visit to: https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages Which is by the Ubuntu Audio Development Team Packages in “ALSA daily build snapshots” Downloading oem-audio-hda-daily-lts-vivid-dkms - 0.201509251531~ubuntu14.04.1.deb I then installed the .deb and rebooted Et voilà! Sound out of the onboard audio. Nice. Had to fiddle around with the PulseAudio settings and master controls to make everything use the onboard audio but there we are. Thought I'd post this in case anyone else experienced the same problem :) Regards, Patrick -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html