I am having a weird problem trying to get hibernation to work when I press the power button on my Thinkpad X31 under CentOS 5.4. I've modified /etc/acpi/events/power.conf to contain: # ACPID config to power down machine if powerbutton is pressed, but only if # no gnome-power-manager is running event=button/power.* action=/bin/ps awwux | /bin/grep gnome-power-manager | /bin/grep -qv grep || /sbin/shutdown -h now And restarted acpid (sudo /sbin/service acpid restart). I don't run gnome, so there won't be a gnome-power-manager process running. When I press the power button nothing happens (acpid does log that it ran the above action). If I run the action line above in a shell (as root), the machine does hibernate just fine. What is going on here? -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller at deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/