https://bugs.kde.org/show_bug.cgi?id=458469
Bug ID: 458469
Summary: "Data too big for buffer" and clients exit when
turning external monitor back on
Product: kwin
Version: 5.25.4
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: k...@hexchain.org
Target Milestone: ---
Created attachment 151681
--> https://bugs.kde.org/attachment.cgi?id=151681&action=edit
Logs
SUMMARY
I'm using a laptop with a closed lid and connected to an external monitor via
HDMI. The internal screen is also disabled in System Settings.
Occasionally, when I turn the external monitor back on, the still-closed
internal screen will be incorrectly enabled (I can move my mouse beyond the
boundary of the external monitor as if the internal screen is on the left), and
after unlocking I get a black background with only some open windows - panels
and the desktop are gone, and the screen arrangement is incorrect.
I've attached logs of one such occasion. kwin_wayland_wrapper logs "Data too
big for buffer (43708 > 4096)" and kicks the connection with some programs
(plasmashell, powerdevil, and kded). The number "43708" seems consistent - all
such logs across multiple reboots have the same number.
STEPS TO REPRODUCE
1. Connect a laptop to an external monitor
2. Disable the internal screen in System Settings
3. Close the lid
4. Lock the screen and toggle the external monitor
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.5
Kernel Version: 5.19.3-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 4800H with Radeon Graphics
Memory: 28.8 GiB of RAM
Graphics Processor: AMD RENOIR
Manufacturer: MECHREVO
Product Name: Code 01 Series PF5NU1G
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