Toshiba c650 incompatibility

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http://www.linuxquestions.org – i am having a toshiba satellite pro new c650 laptop which 2 months old i installed fedora 14 with acpi=off in the beginning of installation front page as directed in this form when it didn,t install well and got it working but the problem is it my headphone and mic sockets are not working and my battery is not being shown in the power management my system is not shutting down on itself when i hit the shutdown option instead it shows a message of system halted and the cusrsor stays there on the display monitor until power gets discharged and also want to know what is acpi in the fedora (HowTos)