Alessandro - HDMI audio on ATI Radeon hardware was disabled by the upstream kernel developers as it causes blank screens on a lot of systems.
You can re-enable HDMI audio by adding "radeon.audio=1" to your GRUB boot options - see https://help.ubuntu.com/community/Grub2/Troubleshooting#Editing_the_GRUB_2_Menu_During_Boot. This issue is being tracked in bug #897008. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169984 Title: 3.8.0-18 HDMI/DisplayPort audio regression: Either oops or opening device fails with -ENODEV To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-desktop-tests/+bug/1169984/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
