Bug 506661

Summary:	HDMI display replication fails on KDE Plasma 6.4.0 - no signal sent to TV when set as replica of main display
Product:	[Plasma] KScreen	Reporter:	KDE User <kde.h2vne>
Component:	common	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kdedev
Priority:	NOR
Version First Reported In:	6.4.0
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description KDE User 2025-07-06 05:18:34 UTC

SUMMARY

Attempting to replicate my main display on my TV over HDMI is causing no signal to be sent to the TV. However, setting the TV to be it's own screen (Replica of None) works correctly.

STEPS TO REPRODUCE
1. Connect TV via HDMI
2. Set TV screen to be a replica of the main display
3. Apply

OBSERVED RESULT

No signal sent to the TV

EXPECTED RESULT

TV receiving a signal and the main display replicated to the TV.

SOFTWARE/OS VERSIONS

Operating System: Bazzite 42
KDE Plasma Version: 6.4.0
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.14.6-109.bazzite.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 64 GiB of RAM (62.7 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 3060 Ti
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B450M DS3H WIFI

Comment 1 TraceyC 2025-07-10 22:15:10 UTC

I'm not able to replicate this on git-master. Can I ask you to copy and paste the output of the following into this report?

kscreen-doctor -o

Also, this will output some text into a file "~/drm_info.txt". Can you attach that to this report?
drm_info > ~/drm_info.txt

Thanks.

Comment 2 Bug Janitor Service 2025-07-25 03:46:51 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 3 Bug Janitor Service 2025-08-09 03:46:55 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.