Bug 484900 - external display being powered off is not detected
Summary: external display being powered off is not detected
Status: RESOLVED NOT A BUG
Alias: None
Product: kwin
Classification: Plasma
Component: multi-screen (show other bugs)
Version: git master
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-04-02 03:23 UTC by fanzhuyifan
Modified: 2024-04-02 11:40 UTC (History)
1 user (show)

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

Attachments
Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description fanzhuyifan 2024-04-02 03:23:42 UTC 
SUMMARY


STEPS TO REPRODUCE
1. connect external display via HDMI
2. power off external display (not disconnect, poweroff)

OBSERVED RESULT
In system settings - displays, the powered off external display is still shown.

EXPECTED RESULT
The powered off external display is disabled.

SOFTWARE/OS VERSIONS

Operating System: Arch Linux 
KDE Plasma Version: 6.0.80
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Kernel Version: 6.8.2-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 20 × 13th Gen Intel® Core™ i9-13900H
Memory: 15.2 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: ROG Zephyrus G16 GU603VV_GU603VV
System Version: 1.0
ADDITIONAL INFORMATION
Comment 1 fanzhuyifan 2024-04-02 04:58:58 UTC 
For me, this also happens on X11. I am using intel iGPU with NVIDIA dGPU, and the hdmi port should be driven by the nvidia GPU.
Comment 2 Zamundaaa 2024-04-02 11:40:16 UTC 
This is just how HDMI works, there's nothing we can do about it