[Bug 75385] Dell Latitude E5440 screen goes blank when external VGA monitor connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75385

--- Comment #19 from colin.morningstar at gmail.com ---
OK, I'll try this when I get back to my office.  

Additional remark:  I made a udev rule that runs a script which basically
sleeps for a while when the kernel detects a drm change.  Now when I plug in an
external monitor, that script runs, so I can still use the laptop.   With the
external monitor plugged in and my sleeping script running,  I issue an "xrandr
-q" command from a terminal window, and the screen goes blank.  Why should a
mere query do this?  Hopefully this provides additional info to figure out the
problem.

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