I made a recording of the issue, sorry my webcam sucks, i was not able to get vlc to flip the video playback from the webcam to compensate for the mirror, but its only purpose was showing the backlight response
** Attachment added: "Recording of bug" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1138168/+attachment/3577086/+files/backlight-bug-linux-3.7_3.8_3.9.mp4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1138168 Title: Backlight control regression To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1138168/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs