GNOME Bugzilla – Bug 551565
When Escape is pressed to dismiss Log off/Switch User screen, the desktop stays dimmed
Last modified: 2020-11-06 20:06:41 UTC
Please describe the problem: I accidentally brought up the Log-off/Lock Screen/ Switch User screen that dims the desktop. I pressed Escape to dismiss it and my desktop was not returned to full brightness. The brightness applet and the Fn-Brightness+ both show that the laptop is set to full brightness. I an running on a Dell Inspiron. I have found some extra info. I was unable to replicate the bug with Compiz running, so I switched it off. I was then able to replicate but was unable to switch Compiz back on. In searching for a fix a came across https://bugs.launchpad.net/ubuntu/+source/control-center/+bug/231904 and saw that the key /apps/metacity/general/compositing_manager was indeed selected. By un-checking Metacity as my compositing manager I was able to get Compiz working again. The dimming issue again went away. If I then went to System-Preferences-Appearance-Visual Effects I was able to turn off Compiz and the issue was still fixed. I then went back and re-checked Metacity as my compositing manager and the problem was back. So it looks like an issue with the Metacity compositing manager interacting with the logout manager. Steps to reproduce: 1. Click on Log off 2. Press Escape Actual results: Screens stays dimmed Expected results: Screen should return to full brightness Does this happen every time? Yes Other information: This issue was reported on Launchpad: https://bugs.edge.launchpad.net/ubuntu/+source/gnome-session/+bug/249803
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