Bug#773684: Not specific to Hugin; happens only when an external display is connected

["H:S" <he29.hs@gmail.com>]

Hi again,

I have another piece of (hopefully useful) information:

1) I was apparently not using the "right applications"; I just found out 
that launching basically any 3D application causes xserver to crash 
instantly. Easily reproduced e.g. by launching glxgears.

2) Also, I found out that it happens ONLY if I have an external display 
connected (via HDMI, the laptop has no other reasonable outputs 
available). The external display is set up by:
 xrandr --output HDMI1 -r 85 --mode 1024x768 --right-of eDP1
.

Best regards,
Martin