I'm still trying to deal with my problem with closing the lid on this HP CentOS7 laptop. I set "HandleLidSwitch=ignore" in logind.conf, and I've rebooted and logged back in. I closed the lid and nothing appeared to happen, which was initially good news, but the bad news is that the system was now completely frozen, except for the mouse cursor and the power
button. Nothing else does anything.
And I have an external monitor connected, with "mirror display" set.
Note that I'm using a HP port replicator that my monitor and keyboard are plugged into, with a usb connector from the replicator to the laptop.