I reported earlier that the crash only happens for me when I move the mouse pointer from my external monitor to the laptop primary display. I just reproduced again when moving the mouse pointer the other way: It was fine with the mouse cursor on the laptop primary display for a while (2 minutes, while using the machine normally) then crashed immediately the first time I moved the mouse to the external monitor.
I reported earlier that the crash only happens for me when I move the mouse pointer from my external monitor to the laptop primary display. I just reproduced again when moving the mouse pointer the other way: It was fine with the mouse cursor on the laptop primary display for a while (2 minutes, while using the machine normally) then crashed immediately the first time I moved the mouse to the external monitor.