I tried to use Xpra, but keep getting this?
Failed to connect, received: 'xpra initialization error:\n unknown format for display name: S3630'
This is on stretch (upgraded from jessie).
This is from log file on server side in /home/pi/.xpra/
/usr/lib/xorg/Xorg.wrap: Only console users are allowed to run the X server
2019-05-06 16:14:40,438 Error starting Xvfb:
2019-05-06 16:14:40,440 Xorg did not provide a display number using -displayfd