https://bugs.kde.org/show_bug.cgi?id=429047
Bug ID: 429047
Summary: systemsettings and kmail get stuck scanning fonts and
consuming 100% CPU when started under Wayland in Sway
Product: systemsettings
Version: 5.20.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: devuran...@gmx.net
Target Milestone: ---
SUMMARY
KDE applications like systemsettings or kmail do not show any window when being
started. They keep running in the background with 100% CPU utilisation. When
running them under strace (`strace systemsettings`), the output are lines like
the following, over and over again (i.e. I see the same files and folders being
scanned again and again, ad infinitum):
openat(AT_FDCWD, "/usr/share/fonts/noto/NotoSans-Regular.ttf", O_RDONLY) = 22
fcntl(22, F_SETFD, FD_CLOEXEC) = 0
fstat(22, {st_mode=S_IFREG|0644, st_size=509848, ...}) = 0
mmap(NULL, 509848, PROT_READ, MAP_PRIVATE, 22, 0) = 0x7ff7541fd000
close(22)
I am running Sway (Wayland) for my window manager.
STEPS TO REPRODUCE
1. Start Sway
2. Open a terminal
3. Run `strace systemsettings`
OBSERVED RESULT
The same font directories are scanned again and again and no window is shown.
EXPECTED RESULT
I see the system settings window.
SOFTWARE/OS VERSIONS
Linux: 5.8.14
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1
ADDITIONAL INFORMATION
`systemsettings5 --version` says it is version 5.20.2, but my package manager
says version 5.20.3 is installed.
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