如何恢复已加载的Kate插件？解决Ubuntu 16.04下Kate启动报错问题

Hey Pablo, sorry to hear you're stuck with this frustrating startup issue in Kate. Let's walk through some thorough steps to wipe out broken residual configs, fix missing dependencies, and get it running smoothly again—since the basic reinstall and ./kde folder delete didn't do the trick.

Step 1: Fully Purge Kate and All Residual Data #

First, we'll make sure every trace of Kate (including corrupted config files) is removed from your system:

• Uninstall Kate completely, along with unused dependencies that might be causing conflicts:

  sudo apt-get purge --auto-remove kate
  

• Delete all user-specific Kate/KDE configuration and cache files you might have missed earlier:

  rm -rf ~/.config/kate*
  rm -rf ~/.local/share/kate
  rm -rf ~/.cache/kate
  rm -rf ~/.config/kdeglobals
  

Step 2: Reinstall Kate with Full KDE/Qt Dependencies #

The error points to a missing KWindowSystem platform plugin, which usually means core KDE or Qt components are missing. Install Kate along with the full KDE runtime to cover all required dependencies:

sudo apt-get install kate kde-runtime

If that still doesn't work, install essential Qt 5 platform plugins explicitly to fill any gaps:

sudo apt-get install qt5-default qtbase5-dev-tools libxcb-xinerama0

Step 3: Test with a Temporary Qt Platform Variable #

Sometimes the system's default Qt platform plugin is misconfigured. Let's force Kate to use the XCB plugin (the standard for Ubuntu's desktop) to test if this fixes the issue:

QT_QPA_PLATFORM=xcb kate

If Kate launches successfully with this command, make the fix permanent by adding the variable to your shell config:

echo 'export QT_QPA_PLATFORM=xcb' >> ~/.bashrc
source ~/.bashrc

Step 4: Verify System Graphics Dependencies (Optional) #

If you're still hitting the error, double-check that your system has the basic X11 dependencies needed for KDE apps to run:

sudo apt-get install xorg xserver-xorg-core

Try these steps in order—starting with the full purge and reinstall should resolve most cases of this plugin error. Let me know if any step hits a snag!

内容的提问来源于stack exchange，提问作者Pablo