Since upgrading from 14.04 to 16.04.1 I'm experiencing the same problem. When booting my Precision M4600 in the dock with two external monitors, the laptop suspends immediately after login.
I've checked and /lib/udev/rules.d/70-power-switch.rules contains SUBSYSTEM=="input", KERNEL=="event*", ATTRS{name}=="* WMI hotkeys", TAG+="power-switch"
The laptop also suspends when switching from X to a tty. I'm using the proprietary nvidia drivers.
Since upgrading from 14.04 to 16.04.1 I'm experiencing the same problem. When booting my Precision M4600 in the dock with two external monitors, the laptop suspends immediately after login.
I've checked and /lib/udev/ rules.d/ 70-power- switch. rules contains
SUBSYSTEM=="input", KERNEL=="event*", ATTRS{name}=="* WMI hotkeys", TAG+="power-switch"
The laptop also suspends when switching from X to a tty. I'm using the proprietary nvidia drivers.