Red Hat Bugzilla – Bug 109693
SMP kernel locks up the machine. Single processor kernel works
Last modified: 2007-11-30 17:10:33 EST
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Description of problem:
On a Intel LB440GX server with two Pentium III (katmai core) the
kernel locks up in SMP mode. The single processor core runs without
problems. This same machine was running Redhat 9 three days ago
perfectly with the SMP kernel (2.4.20)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Boot SMP kernel wait a little while. Somewhere during the startup
of the services the kernel locks up
Actual Results: The system locks up. Things like caps-lock LED and
CNTR-ALT-DEL don't work
Expected Results: completion of bootprocess and a responsive machine
Worked fine with 2.4.20 on Redhat 9. Afther having done an upgraded
install first, I did a clean install which resulted in the same issue.
I've ruled out IRQBalance, Harddisk failure, BIOS and hypthreading
Adding "ACPI=force" and "APIC" to the boot commandline resolves the
issues. The Kernel incorrectly disables ACPI because of a BIOS date
My Dell 1650 was having the same problem while booting any SMP kernel.
Adding the above entries to /etc/grub.conf fixed it. I am now at least
able to boot an SMP kernel.
I tried with ACPI=on on a 2 PIII-933 with Asus CUV4X-DLS and worked
I tried on my Dell Precision 210 dual 450MHz and the SMP kernel will
*** This bug has been marked as a duplicate of 107880 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.