I added "acpi_rsdp=efi acpi_backlight=vendor" to the grub parameters (/etc/default/grub). Fixes the backlight issue, but the laptop won't suspend and the battery indicator doesn't show up...
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1177963 Title: Backlight switches of on Ubuntu 13.04 boot-screen - Dell XPS12 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1177963/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
