I've read the answers to this question but I don't have ACPI, the
/sys/class/drm/card0-socket/status method does not work and the
xrandr method chokes my CPU.
udevadm monitor shows nothing when (un)plugging the monitor.
I've got a circa 2013 Lenovo ThinkPad w530 with nVidia quadro something. I'm running Lubuntu 18.04 with the
nouveau driver. The monitor is a 27" Philips 271S. I'm using a VGA cable.
How do I do detect monitor (un)plugging?