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Old 02-13-2005, 07:18 AM   #1
Hook99
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Registered: Dec 2004
Location: Cincinnati
Distribution: Fedora Core 3
Posts: 31

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MP-BIOS bug: 8254 timer not connected to IO-APIC


Fedora Core 3
On boot, I receive an error message similar to: MP-BIOS bug: 8254 timer not connected to IO-APIC.

The computer is a dual=processor machine. System Monitor shows two CPU's working.

Part of my Kernel startup log is:

ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=0
..MP-BIOS bug: 8254 timer not connected to IO-APIC
...trying to set up timer (IRQ0) through the 8259A ...
..... (found pin 0) ...works.

What causes this error and is there a solution to make this go away?

Thank you.
 
Old 02-19-2005, 10:57 AM   #2
Hook99
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Registered: Dec 2004
Location: Cincinnati
Distribution: Fedora Core 3
Posts: 31

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Does anyone have any thoughts on this problem? Thanks.,
 
Old 01-15-2008, 08:06 AM   #3
izavits
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Registered: Jan 2008
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Quote:
Originally Posted by Hook99 View Post
Does anyone have any thoughts on this problem? Thanks.,
I have tried with various kernel parameters but I wasn't able to come up with a stable system. I solved the problem by disabling the cpufreq service. Now my systems is works fine with full acpi support.
I hope this will help.
 
  


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