https://bugs.kde.org/show_bug.cgi?id=375341
Bug ID: 375341
Summary: Screen lock freezes after removing external screens
Product: plasmashell
Version: 5.8.5
Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: NOR
Component: Multi-screen support
Assignee: aleix...@kde.org
Reporter: kato...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
I use my laptop either with two external screens connected to a docking station
while the laptop screen is disabled (lid is closed) or only on laptop screen.
When I remove the computer from the docking (thus the external screens are
disconnected) while the screen is locked and after this I open the lid, the
screen is black, only the mouse pointer is visible (it can be moved) and the
screen cannot be unlocked. The only way to unlock the screen is to go to a
terminal screen and issue
loginctl unlock-sessions
After this the screen is back and everything works normal. This seems to be a
major issue, since the user is practically locked out of the computer, and for
most users the only solution is hard reset.
This also happens when I suspend the laptop with the screens connected and
resume it after removing it from the docking.
In some cases I even cannot switch to the terminal screen.
This bug appeared in 5.8.5. Maybe it is connected to bug 371734 and it's fix. I
guessed it is a multiscreen issue rather than kscreenlocker.
My system is Opensuse Tumbleweed, Plasma 5.8.5, Frameworks 5.29.0, Qt 5.7.1,
kernel 4.9.3 64bit
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