/var/log/suspend.log, all is a success or not applicable, except these lines:
Having NetworkManager put all interaces to sleep...Failed. Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory Having NetworkManager wake interfaces back up...Failed.
I'm not sure that they are relevant, but I'm stymied.
I tried adjusting the brightness via keyboard, and also tried opening a terminal and commanding a shutdown, but neither worked, so it appears to not load properly at all, though the screen backlight is powered and the system is running.
This is an HP Pavillion Dv7 notebook.