No "fix" yet as such, however, thanks to kernel developer AAron Lu I can confirm that there is a workaround to manually adjust screen brightness.
Its not overly practical, but you possibly write a script to do it. The sequence of commands is below. Essentially it involves accessing your video card via /sys and poking the brightness value directly. Mine video is detected as radeon_bl0. I will revert when I have further information. lewis@HappyFunMeaowMeaow:~$ sudo -s [sudo] password for lewis: root@HappyFunMeaowMeaow:~# cd /sys/class/backlight/radeon_bl0 root@HappyFunMeaowMeaow:/sys/class/backlight/radeon_bl0# cat max_brightness 255 #Max value for your hardware root@HappyFunMeaowMeaow:/sys/class/backlight/radeon_bl0# echo 200 > brightness #Example root@HappyFunMeaowMeaow:/sys/class/backlight/radeon_bl0# echo 10 > brightness #Example root@HappyFunMeaowMeaow:/sys/class/backlight/radeon_bl0# echo 255 > brightness #Example root@HappyFunMeaowMeaow:/sys/class/backlight/radeon_bl0# -- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315834/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
