If your copy of /usr/sbin/unity-system-compositor.sleep is the same as mine then the full command is:
/usr/sbin/unity-system-compositor --disable-inactivity-policy=true --on-fatal-error-abort --file '/run/mir_socket' --from-dm-fd 12 --to-dm-fd 21 --vt 8
If your copy of /usr/sbin/ unity-system- compositor. sleep is the same as mine then the full command is: unity-system- compositor --disable- inactivity- policy= true --on-fatal- error-abort --file '/run/mir_socket' --from-dm-fd 12 --to-dm-fd 21 --vt 8
/usr/sbin/