Bug #428054 is now closed, but the problem wasn't the same. Could try running "xrandr --prop" in console, and post the items listed below BACKLIGHT_CONTROL?
-- [Karmic] Brightness Buttson OSD Test Acer Aspire 5810-4657 https://bugs.launchpad.net/bugs/432835 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
