Bug 515199 - Connecting/disconnecting the HDMI cable to my 4K TV kills Plasma Login Manager
Summary: Connecting/disconnecting the HDMI cable to my 4K TV kills Plasma Login Manager
Status: REPORTED
Alias: None
Product: plasma-login-manager
Classification: Plasma
Component: general (other bugs)
Version First Reported In: unspecified
Platform: CachyOS Linux
: NOR crash
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords: multiscreen, usability
Depends on:
Blocks:
 
Reported: 2026-01-28 11:59 UTC by Fernando Marcelino Muniz
Modified: 2026-01-30 11:27 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Issue in Plasma 6.5.5 (3.04 MB, video/mp4)
2026-01-30 11:27 UTC, Fernando Marcelino Muniz 		Details
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Description Fernando Marcelino Muniz 2026-01-28 11:59:40 UTC 
STEPS TO REPRODUCE
1. Be at the Plasma Login Manager.
2. Connect or disconnect A HDMI cable connected to a monitor/TV.

OBSERVED RESULT
"He's dead, Jim."

EXPECTED RESULT
Normal transition between monitors.

SOFTWARE/OS VERSIONS
Operating System: CachyOS Linux 
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.18.7-2-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i5-11300H @ 3.10GHz
Memory: 9 GB of RAM (8.1 GB usable)
Graphics Processor 1: Intel® Iris® Xe Graphics
Graphics Processor 2: NVIDIA GeForce GTX 1650
Manufacturer: LENOVO
Product Name: 82MG
System Version: IdeaPad Gaming 3 15IHU6
Comment 1 TraceyC 2026-01-30 10:51:09 UTC 
Thanks for the bug report. We need more detail in order to understand what's happening.
When you say "He's dead, Jim.", can you explain what's actually happening on your system? What exactly do you see when you connect or disconnect the HDMI cable?
Also, can you provide system logs for just before and just after the cable plug event?

Thanks.
Comment 2 Fernando Marcelino Muniz 2026-01-30 11:18:50 UTC 
When I disconnect the screen while on PLM the system dies and I have to reboot.
When I connect the screen while on PLM the system dies and I have to reboot.
I can't provide logs just before/after because the system dies and I have to reboot.
Comment 3 Fernando Marcelino Muniz 2026-01-30 11:27:48 UTC 
Created attachment 189056 [details]
Issue in Plasma 6.5.5