https://bugs.kde.org/show_bug.cgi?id=408475
Bug ID: 408475
Summary: kwin hangs when changing workspaces and manually
maximize windows
Product: kwin
Version: 5.15.5
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: raitarohik...@protonmail.com
Target Milestone: ---
Created attachment 120714
--> https://bugs.kde.org/attachment.cgi?id=120714&action=edit
output of qdbus org.kde.KWin /KWin supportInformation
SUMMARY
When I try to change a desktop either by keyboard shortcut or with pager kwin
hangs for around 10 seconds or more. In that state I can still see the screen,
move the cursor around, hear the audio. Sometimes I don't even move to the next
desktop and it looks like I moved back to where I was. Same thing happens if I
grab a windows and I snap it to any side of the screen (it does not affect the
tile shortcuts).
STEPS TO REPRODUCE
1. change virtual desktop (workspace)
2. manually snap a window
OBSERVED RESULT
Kwin lags for a long time.
EXPECTED RESULT
Kwin working as it should.
OS VERSIONS
SOFTWARE/Operating System: KDE neon 5.15
KDE Plasma Version: 5.15.5
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.0
Kernel Version: 4.15.0-51-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-7700HQ CPU @ 2.80GHz
Memory: 7.4 GiB of RAM
Kwin 5.15.5
Nvidia driver version: 430.14 (GeForce GTX 1050 Ti 4GB)
X.org version: 1.19.6 (11906000)
ADDITIONAL INFORMATION
I have tried with no effect
update the kernel
updated the nvidia driver to 430.9
disable fade animation
disable wobbly windows
set render loop to basic
use OpenGL 2.0 and Smooth under compositor
disable the FORCE BLUR script that might be causing this
disable my force transparency which is global
This is what happens when kwin is in that state:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13997 raitaro 25 5 3549848 127484 95120 S 6,7 1,6 0:42.05 kwin
13997 raitaro 25 5 3549848 127484 95120 S 0,0 1,6 0:42.05 kwin
13997 raitaro 25 5 3549848 127484 95120 S 0,0 1,6 0:42.44 kwin
13997 raitaro 25 5 3549848 127484 95120 S 0,7 1,6 0:42.46 kwin
13997 raitaro 25 5 3549848 127484 95120 S 0,0 1,6 0:42.46 kwin
13997 raitaro 25 5 3549844 127484 95120 S 20,0 1,6 0:43.06 kwin
13997 raitaro 25 5 3549844 127484 95120 S 99,3 1,6 0:46.05 kwin
13997 raitaro 25 5 3549844 127584 95120 D 46,7 1,6 0:47.45 kwin
13997 raitaro 25 5 3549844 127584 95120 D 0,0 1,6 0:47.45 kwin
The command kwin --replace gives me a few things:
Could not create scene graph context for backend 'opengl' - check that plugins
are installed correctly in /usr/lib/x86_64-linux-gnu/qt5/plugins
trying to show an empty dialog
trying to show an empty dialog
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 3720, resource
id: 29360256, major code: 18 (ChangeProperty), minor code: 0
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 4299, resource
id: 29360239, major code: 2 (ChangeWindowAttributes), minor code: 0
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 8641, resource
id: 29360580, major code: 2 (ChangeWindowAttributes), minor code: 0
WobblyWindowsConfig::instance called after the first use - ignoring
I also attached the output of qdbus org.kde.KWin /KWin supportInformation
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