https://bugs.kde.org/show_bug.cgi?id=428479
Bug ID: 428479
Summary: Choosing SWITCH USER option causing system freeze on
post-login desktop session
Product: systemsettings
Version: 5.18.5
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: kcm_sddm
Assignee: k...@davidedmundson.co.uk
Reporter: bijayd...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: ---
SUMMARY
Choosing SWITCH USER option causing system freeze on post-login desktop
session.
STEPS TO REPRODUCE
There are 3 events.
Event-1
Choose 'SWITCH USER' from an active desktop session(https://ibb.co/V2M6gdf).
Get login screen & provide password. After 5 min (in my case) you will enter &
get the desktop session frozen.
Event-2
Step-1: Within a desktop session click Sleep.
Step-2: Wake up the system from suspension but dont login there. Click 'SWITCH
USER' option on that sceen(https://ibb.co/KVsTgSD). On next screen, input
password in Login box. After 5 min you will enter & get the desktop session
frozen.
Event-3
Step-1: Within a desktop session click Sleep (additionally, one can suspend
the session keeping any desktop applications e.g. Firefox running
https://ibb.co/Cw92FdD).
Step-2: Wake up the system from suspension but dont login there. Click 'SWITCH
USER' option on that screen. On next screen click Sleep.
Step-3: Wake up the system from suspension & try to login, input your password
in the box. Next, login screen freezes/halts for approx 5 min (in my case) &
thereafter gets into the Desktop session. The whole Desktop is frozen. Clicking
on the wheel / pressing Windows key or clicking any other icons dont work. you
can only hover mouse pointer.
Access tty1 with Ctrl+Alt+F1 (if suspended with Firefox as in step-1, on
tty1 at first you will get Firefox window without a title bar
https://ibb.co/GvhxwCz. Login appears after quitting the Firefox). Once you
input password there it freezes too.
Got 2 crash reports: @desktop https://pastebin.com/RTpGGSDX
https://ibb.co/X3WV9zC
@tty1 https://pastebin.com/A4W3SvQg https://ibb.co/0m3Z0gh
OBSERVED RESULT
probably Shifting to other user account(s) not occurring in such cases.
EXPECTED RESULT
??
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Kubuntu 20.04
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
ADDITIONAL INFORMATION
Kernel Version: 5.4.0-47-generic
OS Type: 64-bit
Processors: 4 × Intel® Core™ i3-7020U CPU @ 2.30GHz
Memory: 3.7 GiB of RAM
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