Updated to 5.5.1+dfsg-14ubuntu3.  It's not enough to prevent Plasma from
crashing if I disconnect/reconnect both monitors simultaneously with my
script.

#!/bin/sh
restore=`unxrandr`
outputs=`xrandr | grep -i "^\\w" | grep connected | cut -d' ' -f1`
alloff="xrandr"
for o in $outputs
do
        alloff="$alloff --output $o --off"
done
echo $alloff
echo $restore
$alloff
sleep 2
$restore

But at least applications tend to survive, and plasma restarts itself.

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to qtbase-opensource-src in
Ubuntu.
https://bugs.launchpad.net/bugs/1551122

Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1551122/+subscriptions

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