After an update, hdmi was not working anymore (no video and no sound). So i did the command: sudo gedit /etc/default/grub
and changed "GRUB_CMDLINE_LINUX_DEFAULT="NOMODESET"" into "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.audio=1"" then sudo update-grub it fixed the problem for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1542934 Title: hdmi not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1542934/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs