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List:       linux-smp
Subject:    problem: IO-APIC problem
From:       "V.Venkatasubramani" <vvs () ncra ! tifr ! res ! in>
Date:       2002-02-08 11:12:18
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dear Sir

	We got the following error while trying to boot kernel with smp 
for dual CPU machine. The config is as follows;

Mother Board 	- ASUS CUV4X-D and BIOS version 1007
CPU 		- INTEL PIII-1000 Mhz (Socket 370)	2 Nos.
Software ver	- RedHat 7.2 with kernel 2.4.7-10smp

error log; (while booting) the following error came
....
Unexpected IO-APIC , please mail to 
	
	linux-smp@vger.kernel.org

calibrating delay loop...2005.40 BogoMIPS
CPU:L1 I Cache: 16K, L1 D Cache 16K
CPU: L2 Cache 256K
Intel machine check reporting enabled on CPU#1
CPU1: Intel Pentium III (Coppermine) stepping 0a
Total of 2 processors activated (4010.80 BogoMIPS).
Enabling IO-APIC IRQs
...Changing IO-APIC physical APIC ID to 2...ok
..TIMER: vector=0x31 pin1=2 pin2=0
testing the IO APIC....
	CPU clock 1004.4981 Mhz
	host bus clock speed is 133.9328 Mhz

.....
then it hung , no response to keyboard and only reset works.

Our observation: We procured this ASUS dual CPU capable board system with 
Intel PIII 1GHz and then we bought another INTEL CPU 1 GHZ and tried to 
boot smp kernel. The above is the trouble. But, single CPU kernel is 
working. WE have checked the new CPU separately and it working fine. We 
have even downloaded the Frq-id utility from INTEL to test the CPU is 
genuinity and it showed correctly the CPU freq and bus freq. The 
motherboard config tried in jumper mode and jumper free mode. Both has the 
same problem.
	Can you help me in solving this problem.
Thanks in advance,
-- 
vvs -- Sys Admin
Fri Feb  8 14:45:51 IST 2002
	V.Venkatasubramani               email:	 vvs@ncra.tifr.res.in 
	NCRA  TIFR  PUNE- 411007 phone 020-5697107 vvsooty@netscape.net


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