This can be reproduced by setting screen brightness to a minimum and turning off the screen. Also happens on auto brightness and when being in a dark place.
Seems the minimum supplied power for the display needs to be increased for tiny bit. ** Also affects: canonical-devices-system-image Importance: Undecided Status: New ** Changed in: unity8 (Ubuntu) Status: New => Invalid ** Summary changed: - phone unlock screen + Screen doesn't wake up when on minimum brightness -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1459121 Title: Screen doesn't wake up when on minimum brightness To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1459121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs