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Automatic Startup

Perform both these tasks - on Windows and inside WSL2 - to get a fully-automatic setup that "does the right thing" even after reboot without manual intervention:

On Windows

Create a Scheduled Task to start wsldhost.exe at login

  • Open Task Scheduler
  • Actions → Create Task...
  • General (tab): Check Run with highest privileges
  • Triggers (tab): Click New, select At log on under Begin the task.
  • Actions (tab): Click, New, select Start a program under Action, set Program/script to the path of wsldhost.exe wherever it is placed, set Add arguments to --daemon.
  • Conditions (tab): Uncheck Start the task only if the computer is on AC power and Stop if the computer switches to battery power
  • Settings (tab): Uncheck Stop the task if it runs longer than

It should now start up at every boot as Administrator with the --daemon option. Now start wsldhost.exe by right-click-ing on the newly created task and clicking Run.

On WSL2

  • Make sure xset is installed, e.g. with sudo apt-get install x11-xserver-utils in Debian-based distributions.
  • Add this to your ~/.profile or ~/.bash_profile or ~/.zlogin:
export DISPLAY=:0

if ! pgrep wsld >> /dev/null 2>&1 ; then
    nohup wsld > /dev/null < /dev/null 2>&1 &
    disown

    # sleep until $DISPLAY is up
    while ! xset q > /dev/null 2>&1 ; do
        sleep 0.3
    done
fi

Using xset q to test the $DISPLAY makes it possible to run a command like wsl.exe bash --login -c some-terminal, otherwise some-terminal will fail because the $DISPLAY isn't ready yet.