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Bug 1510627 - Plasma5 multi-monitor setup crashes when unplugging 2nd monitor after logoff
Summary: Plasma5 multi-monitor setup crashes when unplugging 2nd monitor after logoff
Alias: None
Product: Fedora
Classification: Fedora
Component: plasma-desktop
Version: 26
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: KDE SIG
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2017-11-07 20:40 UTC by slartibart70
Modified: 2018-05-29 12:18 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-05-29 12:18:08 UTC

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Description slartibart70 2017-11-07 20:40:16 UTC
Description of problem:
fedora26 on a t470 laptop (hidpi display)
I have a 2 monitor setup, the internal laptop screen and an external monitor connected via displayport.
All is fine until logging off, sddm displaymanager is shown on both monitors. 
Now unplug 2nd monitor (pulling dp cable)
The laptop screen goes black immediately - without ever displaying anything again for logging in.
One remedy is to open a vt as root, go to runlevel 3 (init 3) and back to 5 (init 5) - or by using the systemd equivalent commands...

Any other option 
- closing the laptop lid
- going explicitly to 'systemctl suspend' and waking up again 
does NOT restore the sddm login screen - the display just stays black
(yes, there is a mode switch of some kind, you can see a slight flicker, but that's all)

How reproducible:

Comment 1 Fedora End Of Life 2018-05-03 07:57:31 UTC
This message is a reminder that Fedora 26 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 26. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '26'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 26 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged  change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.

Comment 2 Fedora End Of Life 2018-05-29 12:18:08 UTC
Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26
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
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current release. If you experience problems, please add a comment to this

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