[CentOS] APIC and lapic documentation

Robert Moskowitz rgm at htt-consult.com
Wed Oct 18 17:10:04 UTC 2006


I have the following message at boot time:

Local APIC disabled by BIOS -- you can enable it with "lapic"

This might be involved in suspend not working, perhaps or other things.  
I have the 'latest' bios from HP for my system.

So I found the following message, but after installing the kernel-docs, 
I cannot figure out which deals with APIC...

Karanbir Singh wrote:
> Erick Perez wrote:
>> I have a lot of this errors in my Centos stock 4.3 version in an Intel
>> D945gnt motherboard with a Pentium D (dual core)
>>
>> If I disable apic in the grub.conf (apic=off) will I get a performance
>> hit? Im running Asterisk on that machine.
>
> you turn apic off with a noapic on the kernel boot param line. and you
> might also want nolapic, the kernel-doc package has more info on what
> these are and how / when you might to use them.
>
> - KB
>



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