nox@nBox1:~$ sudo apt-get install Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 3 not fully installed or removed. Need to get 0B of archives. After unpacking 0B of additional disk space will be used. Setting up acpid (1.0.4-5ubuntu8) ... * Loading ACPI modules... [ OK ] * Starting ACPI services... acpid: can't open /proc/acpi/event: Device or resource busy invoke-rc.d: initscript acpid, action "start" failed. dpkg: error processing acpid (--configure): subprocess post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of acpi-support: acpi-support depends on acpid (>= 1.0.4-1ubuntu4); however: Package acpid is not configured yet. dpkg: error processing acpi-support (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of powermanagement-interface: powermanagement-interface depends on acpi-support (>= 0.17); however: Package acpi-support is not configured yet. dpkg: error processing powermanagement-interface (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: acpid acpi-support powermanagement-interface E: Sub-process /usr/bin/dpkg returned an error code (1) nox@nBox1:~$