To whom it may concern:
The Asus UX331 laptop is compatible with QubesOS 4.0.
Everything works great, except:
1. A few times per day, the touchpad will just suddenly not do anything.
I can't click, tap, or move the mouse around. The solution appears to be
just to wait about 5 minutes and it starts working again. Or just use an
external USB mouse.
2. It never recovers from sleep or hibernate.