Public bug reported:
System:
Ubuntu Desktop 18.10 with GNOME. Fresh installation.
Package: Unknown
Expected behaviour:
Locking the session via Superkey+L turns connected monitors off after short
period of time and puts them into sleep mode.
What happens:
Session gets locked, but Ubuntu seems to be unable to keep both of my monitors
in sleepmode. Both monitors are blackened shortly after locking the session,
displaying sort of "no signal, going to sleep", but are getting turned on a few
seconds later to show the Gnome lock screen. Then they are turned off and
repeating "no signal, going to sleep". This cycle repeats untill the session
gets unlocked or the PC goes fully to sleep.
Disabling extensions and removing all USB devices didn't change this
behaviour. Previously used KDE which handled lock screens as expected.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1821237
Title:
Monitors cycle on and off repeatedly when session is locked
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