[kde] [Bug 444192] New: Crash when DisplayPort monitor connected
René Serral
bugzilla_noreply at kde.org
Thu Oct 21 14:07:52 BST 2021
https://bugs.kde.org/show_bug.cgi?id=444192
Bug ID: 444192
Summary: Crash when DisplayPort monitor connected
Product: kde
Version: unspecified
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: unassigned-bugs at kde.org
Reporter: rserral at gmail.com
Target Milestone: ---
SUMMARY
I just bought a Displayport Samsung monitor and when connecting it through
USB-C and DisplayLink on my Ubuntu 21.04 a really weird behavior happens. The
moment I connect the monitor KDE applications start to randomly crash and from
then they cannot be started anymore. Looking at the logs I can repeatedly
(around 3 million times!!) see the message:
[warn] epoll_wait: Bad file descriptor
I'm not able to see any other relevant log message.
The most strange issue is that if I disconnect the monitor or if I connect it
through regular HDMI the problem instantly disappears.
I don't really know if it's a plasma or displaylink bug. The problem does not
happen with other non plasma applications (chrome, firefox...)
I filed a bug on DisplayLink already without answer yet:
https://www.displaylink.org/forum/showthread.php?t=67936
Any hint what can be wrong?
No
STEPS TO REPRODUCE
1. Connect the monitor through displayport
2. continue working as usual
3. observe crashes kontact, dolphin, systemsettings, ...
EXPECTED RESULT
No crashes and regular workflow
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.23 (but the behavior is the same in 5.21 and 5.22
My KUbuntu is 21.10 (but before upgrading, the problem was present in 21.04)
KDE Frameworks Version: 5.87, but with 5.86 was the same
Qt Version: 5.15.2
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