I have a fresh installation of Fedora 14 64b. I have tried pretty much distributives and finally my choice is Fedora. I have an Asus M4A89GTD Pro /usb3
mobo and If APIC is enabled in my BIOS I can't turn off my machine, I mean procedure is normally running and I can see that all services are stopped but there is no automatic PSU turn off.
If I disable APIC I can normally turn off my machine but from CPU information I see only 1 available core instead of 4. I have googled this problem pretty much time but there is no usful information. At this time my workaround is sleeping mode which is working fine with or without APIC option. The reason why I offer 500 points for this issue resolution is just because this is very important for me to resolve and during huge amount of time I couldn't find out normal solution. If somebody have an idea, please help!