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. ** Attachment added: "journal.txt" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1450009/+attachment/4722532/+files/journal.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1450009 Title: [HP, Dell notebooks] suspends on closed lid, does not recognized external monitors/dock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1450009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs