Turns out it's my monitor's (Dell U2415) built-in USB hub. If it's not plugged in, suspend works. I've tried disabling wakeup for everything that was enabled in /proc/acpi/wakeup, but that didn't help.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1402839 Title: Suspend hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1402839/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
