Public bug reported:
$ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04
$ apt-cache policy plasma-workspace
plasma-workspace:
Installed: 4:5.5.5.2-0ubuntu1
Candidate: 4:5.5.5.2-0ubuntu1
Version table:
*** 4:5.5.5.2-0ubuntu1 500
500 http://pl.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
100 /var/lib/dpkg/status
Steps to reproduce:
1. Connect two monitors to PC
2. Configure them in KScreen to be side-by-side with second one set to primary
3. Configure Plasma desktops on the screens, add a panel to both of them
4. Lock screen
5. Wait for the screens to into standby
6. Unlock screen
Expected results:
Properly running desktop with everything just like it was before locking the
screen.
Actual results:
Plasma randomly rearranged desktops (folder view that was on second screen, now
is on first) and widgets (one of the panels went missing).
I can see the following logs in .xsession-errors:
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen: Failed to retrieve current config: "Backend invalidated"
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen: Primary output changed from KScreen::Output(Id: 68 , Name: "HDMI2" ) (
"HDMI2" ) to KScreen::Output(Id: 68 , Name: "HDMI2" ) ( "HDMI2" )
kscreen.kded: Change detected
kscreen.kded: Saving current config to file
kscreen.kded: Calculating config ID for KScreen::Config(0x2071280)
kscreen.kded: Part of the Id: "299872f79619431d6101339eae453e66"
kscreen.kded: Part of the Id: "9b5d9fa663a36c77d7b7210c2c7200b8"
kscreen.kded: Config ID: "896ed53d3eb2957d9577f10fecf9bba3"
kscreen.kded: Config saved on:
"/home/pmichniewski/.local/share/kscreen/896ed53d3eb2957d9577f10fecf9bba3"
The issue can be fixed by restarting plasmashell but I have to do this
every time the screen is unlocked after going into standby.
** Affects: plasma-workspace (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1575653
Title:
Plasma 5.5.5 breaks on multi-monitor when the displays go into standby
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