Also happens to me. Ubuntu 12.10 on i386.
1. Press physical power button on Dell 1420n laptop computer
2. Menu appears, select "Suspend"
3. Expect computer to suspend (which does work from gear-like Unity menu and Suspend option)
What actually happens is computer does not suspend, also appears output in $HOME/.xsession-errors:
gnome-session[1921]: libupower-glib-CRITICAL: up_client_get_can_suspend: assertion `UP_IS_CLIENT (client)' failed
Also happens to me. Ubuntu 12.10 on i386. xsession- errors: 1921]: libupower- glib-CRITICAL: up_client_ get_can_ suspend: assertion `UP_IS_CLIENT (client)' failed
1. Press physical power button on Dell 1420n laptop computer
2. Menu appears, select "Suspend"
3. Expect computer to suspend (which does work from gear-like Unity menu and Suspend option)
What actually happens is computer does not suspend, also appears output in $HOME/.
gnome-session[