Red Hat Bugzilla – Bug 1254522
Waking up from suspend resets the brightness and reveals your unlocked screen for half a second
Last modified: 2016-07-19 15:55:32 EDT
Description of problem:
After opening the laptop, it wakes up, but before the lock screen appears, for about half a second, it's not there, and my entire desktop is visible. This is potentially a security issue.
Probably related to this, is also an unpleasant effect, that until the lock screen appears, the brightness is reset to maximum value, and then gets set to the value you left it at, when the lock screen appears.
This is especially unpleasant at night, when the screen blasts your eyes for half a second.
Lenovo ThinkPad T450s
Version-Release number of selected component (if applicable):
GNOME Shell 3.16.3
Steps to Reproduce:
1. Lock screen, close the lit.
2. Open the lit
My desktop gets revealed for half a second, the brightness is at maximum for half a second.
Then the lock screen appears and brightness sets to the previous value.
Lock screen appears, same brightness as was when you closed it.
*** Bug 1256503 has been marked as a duplicate of this bug. ***
Though the bug I reported (bug #1256503, now marked as duplicate of this) only complains about the visible desktop, I confirm the brightness behavior. I only just recently noticed. Different laptop model, same Gnome shell.
(In reply to barsnick from comment #2)
> Though the bug I reported (bug #1256503, now marked as duplicate of this)
> only complains about the visible desktop, I confirm the brightness behavior.
GNOME Shell is not involved in adjusting the brightness, so that's not a gnome-shell issue either.
*** Bug 1245432 has been marked as a duplicate of this bug. ***
The problem seems to only occur when waking up from a suspend. Just locking and closing the screen doesn't seem to cause it. The laptop has to be woken up from suspend when reopened.
Still an issue on Fedora 23, using Dell XPS12 laptop.
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.
If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
Thank you for reporting this bug and we are sorry it could not be fixed.