Public bug reported: This bug relates to the 'services-admin' tool on edgy.
I used services-admin to not stop acpid (and not start during bootup). This worked fine. Then after booting up a few times I re-enabled acpid in the services-admin tool. But for some reason it wouldn't start and gave this error: /proc/acpi/event: Device or resource busy After some investigation I found that the hald daemon (started by dbus) was starting up before acpid and was spawning hal-addon-acpi. It looks like hal-addon-acpi takes control of the /proc/acpi/event file making it inaccessible to acpid. The only reason for this error I can think of is that services-admin possibly reordered the start acpid (to occur after hald). Manually changing /etc/rc2.d/S50acpid to /etc/rc2.d/S10acpid fixed the problem. ** Affects: gnome-system-tools (Ubuntu) Importance: Undecided Status: Unconfirmed -- services-admin reorders acpid startup https://launchpad.net/bugs/69799 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs