That's a negative:

sudo mount -o remount,exec /dev
sudo reboot 

results:
[dreaddy@thing ~] :) sudo /usr/sbin/vbetool dpms off
mmap /dev/zero: Operation not permitted
Failed to initialise LRMI (Linux Real-Mode Interface).

[dreaddy@thing ~] :) sudo setsebool -P mmap_low_allowed

results:
sudo: setsebool: command not found

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https://bugs.launchpad.net/bugs/1875240

Title:
  vbetool: mmap /dev/zero: Operation not permitted
  Failed to initialise LRMI (Linux Real-Mode Interface).

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