Issue can be reproduced with below builds, please refer the results below: [Tested images for verification] Stock 14.04.1 [ubuntu-14.04.1-desktop-amd64.iso] -> Failed Stock 14.10 [ubuntu-14.10-desktop-amd64.iso] -> Failed 15.04 daily build @1/13 [vivid-desktop-amd64.iso] -> Failed
[Test Case / Reproduce Steps] 1. Install Image 2. Press System's brightness hotkey to adjust the brightness level to the lowest or 3. Go to System "Settings" -> "Brightness & Lock" to adjust brightness level to the lowest 4. Check if the screen display still has backlight [Other Info] 1. For 14.04, due to bug#1332379, (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332379), the brightness cannot be adjusted after the system freshly installed. After adding kernel parameter "video.use_native_backlight=1" it then can work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1381625 Title: Adjust brightness to lowest value caused screen whole black To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1381625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
