https://bugs.kde.org/show_bug.cgi?id=439937
Bug ID: 439937
Summary: Debian 11 - Opentype bitmap fonts are displayed with
surrounding whitespace when display scaling is enabled
Product: kde
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: unassigned-b...@kde.org
Reporter: t...@buttersideup.com
Target Milestone: ---
Created attachment 140109
--> https://bugs.kde.org/attachment.cgi?id=140109&action=edit
KDE font selection dialogue showing excess spacing around font preview for
Terminus Bold.
SUMMARY
When a bitmap font is selected, and display scaling is also enabled (KDE
-> System Settings -> Display Configuration -> Global scale != 100%),
then the fonts are rendered at their unscaled size (this is expected for
bitmap fonts), but instead each character is rendered with large amounts
of surrounding space.
T h e e f f e c t i s a b i t l i k e t h i s , a n d i s
n o t u s a b l e .
STEPS TO REPRODUCE
1. Install Debian 11
2. Install the fonts-terminus-otb
3. System Settings -> Display and Monitor -> Display Configuration -> Global
Scale = 175%
4. Konsole -> Settings -> Edit Current Profile -> Appearance -> Font -> Choose
-> Terminus Bold
OBSERVED RESULT
S p a c e d o u t t e x t .
EXPECTED RESULT
Not spaced out text.
Gnome terminal behaves as I would expect in this case - instead it choses a
different point size (e.g. if user has chosen 10 point, it will select nearest
available font to ("chosen font * global scale factor") = 18 point.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian 11
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Debian bug 989831 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989831
See also KDE bug #439936
I've found I can workaround this issue by disabling scaling in konsole
by launching it with this wrapper:
#!/bin/sh
export SAVE_QT_SCREEN_SCALE_FACTORS="$QT_SCREEN_SCALE_FACTORS"
export SAVE_QT_SCALE_FACTOR="$QT_SCALE_FACTOR"
unset QT_SCREEN_SCALE_FACTORS
export QT_SCALE_FACTOR=1
exec /usr/bin/konsole
...and then restoring the SAVE variables in the shell rc so that they
are not inherited by commands which are launched from within konsole.
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