add kernel option acpi_osi=\"!Windows 2012\" it's work .
Because Acer Travelmate 243-m supported UEFI & windows 8 new line of this series, it's support UEFI & windows 8. my laptop is older , can't update bios to new version for support UEFI & windows 8 , acer locked it. relate topic: https://bugzilla.redhat.com/show_bug.cgi?id=903136 ** Bug watch added: Red Hat Bugzilla #903136 https://bugzilla.redhat.com/show_bug.cgi?id=903136 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1174624 Title: Display blank when unpluged and Can't adjust brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1174624/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
