From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) 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): 2.4.22 How reproducible: Always Steps to Reproduce: 1.Boot SMP kernel wait a little while. Somewhere during the startup of the services the kernel locks up 2. 3. 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 Additional info: 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 support
Adding "ACPI=force" and "APIC" to the boot commandline resolves the issues. The Kernel incorrectly disables ACPI because of a BIOS date comparisson.
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 fine.
I tried on my Dell Precision 210 dual 450MHz and the SMP kernel will not boot.
*** This bug has been marked as a duplicate of 107880 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.