Created attachment 120105 [details] Screenshot of badly rendered text SUMMARY In some places in some apps (both builtin and 3rd-party), the text is rendered incorrectly such that the UI shows text inflated, pixelated, and floating outside its intended place. Also, clicking on actionalble text reveals that the UI _thinks_ the text is being rendered where intended even though it is rendered elsewhere. Some text entry fields contain default text that suffers from this problem. In these cases, the default text is floating somewhere below and to the right of the field, and when I type in the field, the text appears floating down and to the right as well. It's as if the UI layout is occurring correctly, but the actual drawing of the text in some cases has it's (x,y) coordinates multiplied by some factor. STEPS TO REPRODUCE 1. Launch System Settings. 2. Choose Multimedia -> Audio Volume OBSERVED RESULT See screenshot. EXPECTED RESULT Text is rendered correctly, where the UI layout intends, and at the correct size. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 19.04 KDE Plasma Version: 5.15.4 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.2 ADDITIONAL INFORMATION 4K display (3840x2160) with font DPI set to 132. The problem persists regardless of what font sizes or DPI I choose.
Can I see the output of the command "env" please
$ env | sort COLORFGBG=15;0 COLORTERM=truecolor DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1933669285/bus DEFAULTS_PATH=/usr/share/gconf/plasma.default.path DESKTOP_SESSION=plasma DISPLAY=:0 GPG_AGENT_INFO=/run/user/1933669285/gnupg/S.gpg-agent:0:1 GS_LIB=/home/pmedynski/.fonts GTK2_MODULES=overlay-scrollbar GTK_CSD=0 GTK_MODULES=gail:atk-bridge HOME=/home/pmedynski KDE_FULL_SESSION=true KDE_SESSION_UID=1933669285 KDE_SESSION_VERSION=5 KONSOLE_DBUS_SERVICE=:1.248 KONSOLE_DBUS_SESSION=/Sessions/1 KONSOLE_DBUS_WINDOW=/Windows/1 KONSOLE_PROFILE_NAME=Profile 1 KONSOLE_VERSION=181203 KRB5CCNAME=FILE:/tmp/krb5cc_cdc1933669285_S84jgj LANG=en_CA.UTF-8 LANGUAGE=en_GB LC_ADDRESS=en_CA.UTF-8 LC_IDENTIFICATION=en_CA.UTF-8 LC_MEASUREMENT=en_CA.UTF-8 LC_MONETARY=en_CA.UTF-8 LC_NAME=en_CA.UTF-8 LC_NUMERIC=en_CA.UTF-8 LC_PAPER=en_CA.UTF-8 LC_TELEPHONE=en_CA.UTF-8 LC_TIME=en_CA.UTF-8 LD_PRELOAD=libgtk3-nocsd.so.0 LESSCLOSE=/usr/bin/lesspipe %s %s LESSOPEN=| /usr/bin/lesspipe %s LOGNAME=pmedynski LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36: MANDATORY_PATH=/usr/share/gconf/plasma.mandatory.path OLDPWD=/home/pmedynski PAPERSIZE=letter PATH=/home/pmedynski/bin:/home/pmedynski/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/opt/BDT:/home/pmedynski/android/platform-tools PROFILEHOME= PWD=/home/pmedynski QT_ACCESSIBILITY=1 QT_AUTO_SCREEN_SCALE_FACTOR=0 QT_QPA_PLATFORMTHEME=appmenu-qt5 QT_SCREEN_SCALE_FACTORS=VGA-1-1=1.4;eDP-1=1.4;VGA-1=1.4;HDMI-1=1.4;DP-1=1.4;HDMI-2=1.4;DP-2=1.4;HDMI-3=1.4; SESSION_MANAGER=local/CI0700000001195:@/tmp/.ICE-unix/6815,unix/CI0700000001195:/tmp/.ICE-unix/6815 SHELL=/bin/bash SHELL_SESSION_ID=2a252fccbe9b4f01a8068dc137b9340d SHLVL=0 SSH_AGENT_PID=9467 SSH_AUTH_SOCK=/tmp/ssh-XHv5BpNhkaNT/agent.9466 TERM=xterm-256color USER=pmedynski _=/usr/bin/env WINDOWID=125829127 XAUTHORITY=/home/pmedynski/.Xauthority XCURSOR_SIZE=0 XCURSOR_THEME=breeze_cursors XDG_CONFIG_DIRS=/etc/xdg/xdg-plasma:/etc/xdg:/usr/share/kubuntu-default-settings/kf5-settings XDG_CURRENT_DESKTOP=KDE XDG_DATA_DIRS=/usr/share/plasma:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/var/lib/snapd/desktop XDG_RUNTIME_DIR=/run/user/1933669285 XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0 XDG_SEAT=seat0 XDG_SESSION_CLASS=user XDG_SESSION_DESKTOP=KDE XDG_SESSION_ID=8 XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session3 XDG_SESSION_TYPE=x11 XDG_VTNR=1
duplicate of bug 397954?
It could be, but I also see the issue in 3rd party apps that use Qt. Will the fix for bug 397954 address all Qt apps as well?
New information was added with comment #2; changing status for inspection.
Changing status.
I found that my display scaling was set to 1.4. When I scaled back to 1.0, this problem went away. However, now I'm left with some apps respecting the system font sizes, and others ignoring those and using tiny fonts I can barely see :)
This was an issue with the use of QtQuickControls1 controls, which has been totally fixed by porting to QtQuickControls2 since this bug was filed.