https://bugs.kde.org/show_bug.cgi?id=450940
Bug ID: 450940
Summary: [Wayland] Full desktop freezes with GTK+ apps
Product: plasmashell
Version: 5.24.2
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: ava...@disroot.org
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
SUMMARY
Recently, I have experienced desktop freezes in the Wayland session, where
after doing certain specific things in GTK+ apps, the whole desktop freezes for
some minutes, and then unfreezes, and then freezes again. During the freezes,
I'm unable to use the keyboard (no switch to different TTY, no volume up/down,
no Ctrl+Alt+Del, etc.), but even with the display frozen, I'm still able to
control the system remotely (e.g. KDE Connect) and music still plays.
I really did an effort to figure out what was causing the issue, and came to
the conclusion that it is definitely Plasma. At first, I thought it had
something to do with webkit2gtk, because Tangram was causing the freezes. Then
I discovered Gajim and Claws Mail also caused them. Then, I thought it was
related to Wayland, so I tried doing the same things in X11, and no freezes! It
had to be Wayland! Finally, I tried using Enlightenment and Weston under
Wayland, and no freezes! It must be KDE!
STEPS TO REPRODUCE
1. Open Tangram.
2. Wait for Pinafore to load the posts.
3. Before it loads the posts, freeze!
4. After some minutes, unfreeze!
1. Open Tangram.
2. Wait for WhatsApp to load.
3. Switch to a different chat, freeze!
4. After some minutes, unfreeze!
5. Go to 3.
1. Open GNOME Web.
2. Do random stuff.
3. Sometimes, out of nowhere, freeze!
4. After some minutes, unfreeze!
5. Go to 2.
1. Open Gajim.
2. Open a chat window.
3. Write in the message box.
4. After some characters, freeze!
5. After some minutes, unfreeze!
6. Go to 4.
(It has stopped happening.)
1. Open Claws Mail.
2. Do random stuff in the second account from top to bottom.
3. Click a mailbox (e.g. Inbox) in the first account from top to bottom.
4. Freeze!
OBSERVED RESULT
The entire desktop freezes.
EXPECTED RESULT
No freezes!
SOFTWARE/OS VERSIONS
Operating System: Parabola
KDE Plasma Version: 5.24.2
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.15.12-gnu-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
The freezes are not related to memory or CPU. The same will happen either right
after booting my system or with tons of apps (including Android Studio) open.
No significant memory or CPU overhead seem to be present.
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