I installed http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy/ and noticed the following message in the kernel log upon booting:
[ 9.293508] acer_wmi: Brightness must be controlled by acpi video driver So i added acpi_backlight=vendor to the kernel boot parms, and now it's working fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181927 Title: 13.04: Brightness control visible but does nothing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181927/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
