Fix disappearing WSL2 X11 windows after resuming from suspend or hibernate (or due to network changes). Workaround for https://github.com/microsoft/wslg/issues/1098 potentially fixed in WSL version 2.2.3. This script filters out smaller windows and without a clear associated PID so that only the user-relevant windows are fixed.

fixWindows.sh

#!/usr/bin/bash
sx=30
sy=30
for window in $(xdotool search -name .)
do
  echo
  xdotool getwindowgeometry $window
  echo "Name: $(xdotool getwindowname $window)"
  PID=$(xdotool getwindowpid $window)
  if [[ ! $PID -gt 0 ]] || [[ $(xdotool getwindowgeometry $window | grep Geometry | cut -f4 -d" " | cut -f1 -d"x") -lt 300 ]]
  then
    echo "[!] Skipping"
    continue
  fi
  echo "PID: $PID"
  echo "[v] Fixing..."
  xdotool windowmove $window $sx $sy
  xdotool windowunmap $window
  xdotool windowmap $window
  sx=$(($sx + 40))
  sy=$(($sy + 40))
done

# inspiration: https://superuser.com/questions/1789454/disappearing-windows-now-in-wslg