[Bug 1425961] Re: kscreen no longer detecting disconnection of primary external monitor

[3vi1]

It looks like this has improved somewhat:  It's no longer necessary to
delete the contents of .local/share/kscreen at least.

The problem where the system does not appropriately act upon
connection/disconnection of the monitor still shows itself in several
very obvious ways though:

Scenario 1:

1. Connected to external (primary) 2560x1080 monitor, put laptop to sleep.
2.  Disconnect monitor.
3.  Wake laptop.
4.  kscreenlocker_greet is unresponsive, and trying to draw a 2560x1080 unlock screen on the laptop's 1920x1080 screen.
5.  The only way to get past this is to go to a terminal and kill the locker process (which will respawn with correct screen info).  The correct screen setup will be used after you unlock the respawned locker.

Scenario 2:
1.  With laptop not connected to monitor, sleep system.
2.  Connect to external 2560x1080 monitor.
3.  Wake laptop.
4.  After unlocking screen, desktop resolution is still 1920x1080, filling only the left 3/4ths of the screen.

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https://bugs.launchpad.net/bugs/1425961

Title:
  kscreen no longer detecting disconnection of primary external monitor

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