Bug 514235 - Pressing power button does nothing if no display is connected
Summary: Pressing power button does nothing if no display is connected
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Power management & brightness (other bugs)
Version First Reported In: 6.5.4
Platform: Arch Linux Linux
: NOR minor
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-01-06 16:45 UTC by joey.joey586
Modified: 2026-01-08 20:25 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In: 6.6.0
Sentry Crash Report:

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Description joey.joey586 2026-01-06 16:45:05 UTC 
SUMMARY
Turning off the display and pressing the power button on the computer doesn't perform the action it was configured to.

STEPS TO REPRODUCE
1. Set "pressing power button" to sleep computer
2. Disconnect any monitors by flipping the switch(es) on the power outlet
3. Press power button

OBSERVED RESULT
System doesn't sleep like it was configured to

EXPECTED RESULT
System goes to sleep when power button is pressed

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.12.63-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7600 6-Core Processor
Memory: 16 GiB of RAM (14.7 GiB usable)
Graphics Processor 1: AMD Ryzen 5 7600 6-Core Processor
Graphics Processor 2: AMD Radeon RX 6800 XT
Manufacturer: MAXSUN
Product Name: MS-Challenger B650M

ADDITIONAL INFORMATION
For displays connected via HDMI, lock the screen, press Esc, wait until display says "no signal", then press power button
Comment 1 joey.joey586 2026-01-06 16:46:34 UTC 
Can also turn off the monitors by pressing the power button on the monitors. I forgot.
Comment 2 Nate Graham 2026-01-08 20:25:09 UTC 
Very likely fixed in Plasma 6 with the fix for Bug 513003, which made Plasma crash when turning off the last screen.