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From: "Benjamin Monate <Benjamin Monate" <Benjamin.Monate@lri.fr>
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Date: Tue, 21 Nov 2000 17:27:33 +0100 (MET)
To: linux-kernel@vger.kernel.org
Subject: Re: Strange lockup of the timer with 2.4.0-test10 SMP (and older)
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>  I guess not -- the timer interrupt and the NMI use different I/O APIC
> inputs.  If both are stuck, it's probably 8254 that gets reprogrammed.  I
> suppose XFree86 might be at fault -- does it happen with the NMI watchdog
> disabled, either? 
Yes. I just enabled the nmi watchdog to try to debug the problem. It did 
not change anything.

About the 8254, the kernel log contains :

Nov 20 17:15:15 pc8-118 kernel: MP-BIOS bug: 8254 timer 
				not connected to IO-AP
IC
Nov 20 17:15:15 pc8-118 kernel: ...trying to set up timer (IRQ0)
						 through the 8259A ...  
Nov 20 17:15:15 pc8-118 kernel: ..... (found pin 0) ...works.

But this does not seem to annoy the kernel.

Is there anyway to restore the 8254 to a valid state without rebooting ?


-- 
| Benjamin Monate         | mailto:Benjamin.Monate@lri.fr |
| LRI - B?t. 490
| Universit? de Paris-Sud
| F-91405 ORSAY Cedex    

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