It is already reported upstream: https://bugzilla.kernel.org/show_bug.cgi?id=55311
There is patch that has recently been merged. Sorry I didn't post it earlier. ** Bug watch added: Linux Kernel Bug Tracker #55311 http://bugzilla.kernel.org/show_bug.cgi?id=55311 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1163418 Title: Backlight is off when switching to discrete AMD GPU using vga_switcheroo and can't be turned on To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1163418/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
