KDE

Mouse scroll

Plug usb connector uit en in

4K / HiDpi

• Go into "System Settings". Under "Display and Monitor" click "Scale Display". Drag the "Scale" slider to an appropriate amount. Log out and then back in
• If your cursor needs resizing you can do so in "System Settings". Under "Workspace Theme", select "Cursor Theme" and then adjust the size on the bottom right hand side
• Create following file:

cat .config/plasma-workspace/env/hidpi.sh    
export PLASMA_USE_QT_SCALING=1

• Add to /etc/environment

GDK_SCALE=2
GDK_DPI_SCALE=0.5

Login:

• Create the following file: /etc/sddm.conf.d/hidpi.conf

[Wayland]
EnableHiDPI=true 

[X11]
EnableHiDPI=true

Hide window decorations on maximize

kwriteconfig5 --file kwinrc --group Windows --key BorderlessMaximizedWindows true
dbus org.kde.KWin /KWin reconfigure

Unix select paste not working

Edit $HOME/.config/plasma-org.kde.plasma.desktop-appletsrc

[ActionPlugins][0]
MiddleButton;NoModifier=org.kde.paste

Wacom tablet offset

in ~/.profile set:

QT_XCB_TABLET_LEGACY_COORDINATES=1

Windows key to overview

https://develmonk.com/2024/03/23/kde-can-have-meta-super-key-blow-up-the-screen-just-like-gnome/

kwriteconfig6 --file kwinrc --group ModifierOnlyShortcuts --key Meta "org.kde.kglobalaccel,/component/kwin,,invokeShortcut,Overview"
qdbus org.kde.KWin /KWin reconfigure

Set two parameters:

I found out the meta-only modifier is one thing that needed to be set in $HOME/.config/kwinrc, but also the Overview=Meta config in $HOME/.config/kglobalshortcutsrc – so there’s two places where it needs to be set. You’re supposed to be able to add /KWin reconfigure to the end to make it work immediately (reloads kwin config), but I’ve only been able to get it to work by killing sddm and logging back in. But hey, thanks so much for pointing me in the right direction!

Reset Kde

https://forum.manjaro.org/t/how-reset-all-kde-settings/21518/2

Logout from KDE and run:

cd ~/
rm -rf .kde
rm -rf .cache/plasmashell*
rm -rf .cache/org.kde.dirmodel-qml.kcache
rm -rf .cache/kioexec/ .cache/krunner/ .cache/ksycoca5*
rm -rf .cache/krunnerbookmarkrunnerfirefoxdbfile.sqlite
rm -f .config/plasma*
rm -rf .config/kde*
cd .local/
rm -rf kate/ kded5/ klipper/ knewstuff3/ kscreen/ konsole/ kwalletd/ ksysguard/ kmail2/ kcookiejar/ kactivitymanagerd/
cd share/
rm -rf dolphin kate kcookiejar kded5 keyrings klipper kmail2 knewstuff3 konsole kscreen ksysguard kwalletd kxmlgui5 plasma_engine_comic plasma plasma_notes org.kde.gwenview
cd ~/.config/
rm -rf akonadi* KDE kconf_updaterc baloo* dolphinrc drkonqirc gwenviewrc kmail2rc k*rc katemetainfos

It wipes config of all software, but help

Overview windows shortcut

kwriteconfig5 --file kwinrc --group ModifierOnlyShortcuts --key Meta "org.kde.kglobalaccel,/component/kwin,,invokeShortcut,Overview"
qdbus org.kde.KWin /KWin reconfigure

https://askubuntu.com/questions/1391793/kde-5-24-overview-launch-key

Editing KDE Calendar single line

sudo vim /usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml

Change line 57:

   // if the date/timezone cannot be fit with the smallest font to its designated space
   readonly property bool oneLineMode: plasmoid.formFactor == PlasmaCore.Types.Horizontal &&
                                       main.height <= 2 * theme.smallestFont.pixelSize &&
                                       (main.showDate || timezoneLabel.visible)

To:

   // if the date/timezone cannot be fit with the smallest font to its designated space
   readonly property bool oneLineMode: true