The original reporter's issue should be solved upstream in the 3.10-rc3 kernel. It contains the following patch:
author Bastian Triller 2013-05-19 11:52:33 (GMT) committer Rafael J. Wysocki 2013-05-22 23:41:45 (GMT) commit c8f6d8351ba8c89d5cd4c562552ec7ec29274e31 (patch) tree 6bfe155bb1f67c0c798428c93520eca8973738cf parent ec4602a9588a196fa1a9af46bfdd37cbf5792db4 (diff) ACPI / video: Add "Asus UL30A" to ACPI video detect blacklist Like on UL30VT, the ACPI video driver can't control backlight correctly on Asus UL30A. Vendor driver (asus-laptop) can work. This patch is to add "Asus UL30A" to ACPI video detect blacklist in order to use asus- laptop for video control on the "Asus UL30A" rather than ACPI video driver. Signed-off-by: Bastian Triller Cc: All stable Signed-off-by: Rafael J. Wysocki -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/780625 Title: "acpi_backlight=vendor" needs to be present in kernel cmdline to have backlight working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/780625/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
