https://bugs.kde.org/show_bug.cgi?id=476412
Bug ID: 476412
Summary: Display freezes when reconnecting to Lenovo
Thunderbolt 4 dock
Classification: Plasma
Product: kwin
Version: git-stable-Plasma/5.27
Platform: Neon
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: lassi.vaatamoi...@gmail.com
Target Milestone: ---
Created attachment 162792
--> https://bugs.kde.org/attachment.cgi?id=162792&action=edit
Log from the dock connect - disconnect - reconnect - REISUB-boot
SUMMARY
When disconnecting Lenovo P15 Gen2 laptop from the dock and reconnecting, the
internal display freezes and the only way to rememdy is either a Alt + SysReq +
"REISUB", or a hard reset.
STEPS TO REPRODUCE
1. Setup Lenovo TB4 Dock with two displays (DP + USB-C as the only working
combination..)
2. Connect Lenovo P15 laptop, observe two external displays working properly
3. Disconnect from dock
4. Reconnect to dock
OBSERVED RESULT
Nothing displayed on external displays, laptop internal display frozen
Sometimes this happens already when disconnecting from the dock (step 3.)
EXPECTED RESULT
External displays should work properly, as they did in the first dock
connection. Disconnecting once more and the internal display should work.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.27
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.2.0-33-generic (64-bit)
Graphics Platform: Wayland
Processors: 16 × 11th Gen Intel® Core™ i7-11850H @ 2.50GHz
Memory: 46,7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics
Manufacturer: LENOVO
Product Name: 20YRS21300
System Version: ThinkPad P15 Gen 2i
ADDITIONAL INFORMATION
NVIDIA Driver Version: 535.113.01
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