https://bugs.kde.org/show_bug.cgi?id=449878
Bug ID: 449878
Summary: With multi-monitor setup, a monitor that is disabled
does not power off.
Product: kwin
Version: 5.24.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: ready2rum...@tutanota.com
Target Milestone: ---
SUMMARY
My laptop has an external monitor connected to it via DisplayPort. On the
desktop, under 'Display and Monitor', it has been configured to disable the
laptop monitor and enable the external monitor as the sole default. When the
laptop boots up, the boot/loading screen is displayed on the laptop up to the
login screen. Once logged in, the laptop monitor should power off and display
only on the external. This has been the case from Plasma 5.23.5 and pre.
As of 5.24, the sequence is practically the same except the laptop monitor does
not power off. Instead, it remains powered on while showing the last frame
displayed on it prior to swapping over to the external monitor. The only way,
in this instance, to power it off is to manually close the laptop lid.
This behavior applies even to the inverse configuration; setting the laptop
screen as the sole primary default and disabling the external monitor, assuming
the OS loaded with the external monitor enabled.
STEPS TO REPRODUCE
1. Under 'Display and Monitor', enable an external monitor and set it as
primary. Then disable the internal/laptop monitor.
OBSERVED RESULT
The disabled monitor does not power off, instead it remains powered on while
stuck showing the last frame before it was disabled.
EXPECTED RESULT
When the monitor is disabled, it should power off.
SOFTWARE/OS VERSIONS
Linux: Fedora 35 KDE
KDE Plasma Version: 5.24.0
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
System:
Host: xxxxx Kernel: 5.16.5-200.fc35.x86_64 x86_64 bits: 64
Desktop: KDE Plasma 5.24.0 Distro: Fedora release 35 (Thirty Five)
Machine:
Type: Laptop System: ASUSTeK product: ROG Strix G513QY v: 1.0
serial: <superuser required>
Mobo: ASUSTeK model: G513QY v: 1.0 serial: <superuser required>
UEFI: American Megatrends LLC. v: G513QY.316 date: 11/29/2021
CPU:
Info: 8-core model: AMD Ryzen 9 5900HX with Radeon Graphics bits: 64
type: MT MCP cache: L2: 4 MiB
Graphics:
Device-1: AMD Navi 22 [Radeon RX 6700/6700 XT / 6800M] driver: amdgpu
v: kernel
Device-2: AMD Cezanne driver: amdgpu v: kernel
Display: wayland server: X.Org 1.21.1.4 driver: loaded: amdgpu,ati
unloaded: fbdev,modesetting,radeon,vesa resolution: 1920x1080~144Hz
OpenGL: renderer: AMD Radeon RX 6800M (navy_flounder LLVM 13.0.0 DRM 3.44
5.16.5-200.fc35.x86_64)
v: 4.6 Mesa 22.1.0-devel
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