Having trouble with dual displays

dchirgwin wrote on Thursday, May 22, 2014:

Hello there,

I’ve built GLFW for my custom i.MX6 ARM platform. My basic xorg.conf has a single screen/monitor and the GLFW examples run fine. (DISPLAY=:0) So far, so good.

When I change my xorg.conf to have two screens/monitors I can’t run the GLFW examples at all.
With DISPLAY=:0 I get -

XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 89 requests (89 known processed) with 0 events remaining.

The desktop that was running on this display disappears after this error. I have to restart the xserver to get it back. I get exactly the same if I use DISPLAY=:0.0

If I use DISPLAY=:0.1 to specify the second display, I get

XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 76 requests (76 known processed) with 0 events remaining.

Anyone got any ideas what I’m doing wrong? All comments and suggestions welcome!

Dave C