I upgraded BIOS to the last available versión (2.12) and brightness control seems to work now using Ubuntu 14.04.1 x64 live media and Radeon driver.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1315834 Title: 1002:983d [Acer Aspire V5-122P] Unable to adjust screen brightness using Radeon driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315834/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
