This seems to be a result of autobrightness. If autobrightness is disabled then the brightness changes immediately, but with autobrightness enabled it's probably waiting until it gets some ambient light data to determine what brightness to use. I guess the best option might be to save off the brightness before dimming the screen and then restore it when undimming.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1226672 Title: With screen dimmed, it takes ~1sec for it to lighten up when touched To manage notifications about this bug go to: https://bugs.launchpad.net/powerd/+bug/1226672/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs