Comment # 6 on bug 89155 from Adam Reichold

Maybe of interest w.r.t this: Running kernel 4.3.3. by now, I found a seemingly
reliable workaround, i.e. if the VGA-connected monitor does not initialize
after boot, it will always properly initialize when I put the system into
suspend-to-memory and wake it up again immediately after that. (But the
VGA-connected monitor will sometimes go dark for a few seconds some time after
it initialized for the first time.)