Virtualbox: Bump live resolution to a minimum of 1024x768px

debian/live-installer.install

+etc
 usr
 sbin
 lib

etc/xdg/autostart/bump-virtualbox-resolution.desktop

+[Desktop Entry]
+Name=Bump Virtualbox Resolution
+Comment=Increase resolution to 1024x768 if it's below that value
+Exec=bump-virtualbox-resolution
+Terminal=false
+Type=application
+Icon=virtualbox
+StartupNotify=false
+Categories=System;Monitor;
\ No newline at end of file

usr/bin/bump-virtualbox-resolution

+#!/usr/bin/python3
+import subprocess
+
+import gi
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gdk
+
+out = subprocess.run(["xrandr"], capture_output=True).stdout.decode()
+
+outlines = out.split("\n")
+output = None
+
+for line in outlines:
+    if ("Virtual" in line) and ("primary" in line):
+        output = line.partition(" ")[0]
+
+monitor = Gdk.Display.get_default().get_primary_monitor()
+geo = monitor.get_geometry()
+
+if output:
+    print("Found virtual display: %s" % output)
+
+    if geo.height < 768:
+        subprocess.run(["xrandr", "--output", output, "--mode", "1024x768"])
+