Upstream now marked this as a duplicate of: https://bugzilla.kernel.org/show_bug.cgi?id=51231
workaround for 3.13 (maybe previous versions as well) is the kernel option: video.use_native_backlight=1 ** Bug watch added: Linux Kernel Bug Tracker #51231 http://bugzilla.kernel.org/show_bug.cgi?id=51231 -- 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: [Aspire V5-431]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
