Also see https://wiki.ubuntu.com/Kernel/Debugging/Backlight
In particular, try adding acpi_backlight=vendor to your kernel boot parameters on the GRUB command line. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1005196 Title: (regression) no backlight control To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1005196/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
