Comment 2 for bug 513326

Thank you for taking the time to report this bug and help to improve Ubuntu.

The error in the log is:

Configurando acpid (1.0.4-5ubuntu9.3) ...
 * Starting ACPI services...
acpid: can't open /proc/acpi/event: No such file or directory
invoke-rc.d: initscript acpid, action "start" failed.
dpkg: error al procesar acpid (--configure):
 el subproceso post-installation script devolvi<F3> el c<F3>digo de salida de error 1

You appear to be running a custom kernel - are you missing the ACPI options in your config?