I need to run a set of (graphical) benchmarks with the screen disabled. The following command did not work:

xset dpms force off

Because any keyboard/mouse input would re-enable the screen. The other option was the following:

xrandr --output eDP-1 --off

This turns off the screen for a second, then, causes the following segmentation fault:

gnome-shell[25737]: segfault at 8 ip 00007f3d02ef9210 sp 00007ffeee4e1fd8 error 4 in libmutter-2.so.0.0.0[7f3d02e99000+156000]

How can the problem be solved? Is there any other user/kernel level alternative?