https://bugs.kde.org/show_bug.cgi?id=524896
Bug ID: 524896
Summary: External monitors using custom (non-native) modes have
DRM "scaling mode" forced to None; GPU scaling
unavailable
Classification: Plasma
Product: kwin
Version First master
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Actual Kwin forces scaling mode to None on every modeset when a custom
resolution is used in an external monitor. This makes GPU scaling unavailable
for non-native modes leaving the display to scale (often badly in custom
modes).
GPU Scaling in this case can be done already using the env var
KWIN_DRM_FORCE_SCALING_MODE but it's not documented and also affects all the
connections.
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