With kernel 3.10: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy/
I got this message in the kernel log: acer_wmi: Brightness must be controlled by acpi video driver So I edited GRUB_CMDLINE_LINUX_DEFAULT in /etc/defaults/grub to look like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" and now it's now working. -- 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
