VGA dies after unplug except when switched to console?

Kevin Chadwick ma1l1ists at
Fri Mar 20 10:48:55 UTC 2015

On ubuntu 14.04 on a DELL optiplex 745 (internal intel gm gpu 965, I
think but I can check), if I unplug the VGA port whilst in X11 then I
find that the screen is blank/black when I plug the VGA cable back in
and I haven't found a way to bring it back aside from switching to the
console which is oddly not blank/black and rebooting.

If I remember to switch to the console before unplugging and plug it
back in and then switch back to X11 with F7? then I do not need to

Is this a known issue or any ideas what is going on?

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