https://bugs.kde.org/show_bug.cgi?id=510522
Bug ID: 510522
Summary: Can no longer change resolution of attached projector
independent from internal laptop display
Classification: Plasma
Product: KScreen
Version First 6.4.5
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
KScreen seems to have lost the ability to switch resolution of outputs
independently.
I am teaching various programming courses and one of KScreen's killer features
of any competitor has been the ability to share the laptop screen with a
projector at different resolution.
This allows the presenter to interact with the laptop like you would when
having no projector attached while at the same time having "private" space not
shared with the projector.
Lecturers with less advanced systems need essentially a third monitor so that
they can sit in front of the same content as the projection yet still have one
monitor for their speaker notes, etc.
STEPS TO REPRODUCE
1. Attach a monitor or projector to a laptop (or a PC with an already
configured monitor)
2. In KScreen's configuration screen choose to mirror/clone/replicate the
internal screen onto to external one
3. Select the external one in the comboboc
4. Change the resolution of the external monitor to be less than that of the
internal one
OBSERVED RESULT
Resolution of the internal screen also switched to the new resolution
EXPECTED RESULT
Only resolution of the selected monitor (projector) changes, resulting in only
the overlapping top-left portion of the internal screen's content to be also
visible on the external display.
SOFTWARE/OS VERSIONS
K_API_VERSION_1_0 [VUID-VkApplicationInfo-apiVersion]
Operating System: KDE neon User Edition
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.14.0-33-generic (64-bit)
Graphics Platform: X11
ADDITIONAL INFORMATION
Worked flawlessly since Plasma 5, probably even longer.
Last observed working before the 2025 summer holidays,likely Plasma 6.3.5,
Might be possible to work around this regression using xrandr, will report back
once I had a chance to try this
--
You are receiving this mail because:
You are watching all bug changes.
