I don't think that is the "harmless" error message mentioned in the release notes as that had to do with the "crash kernel". I saw this same error on a Dell AMD system. It seems the motherboard in that system didn't do ACPI IRQ routing as the kernel expected and experienced a lot of random problems until "acpi=noirq" was passed as a kernel option to disable ACPI IRQ routing defaulting back to the APIC IRQ routing. If that still gives you problems then you may need to use "irq=poll" which forces the kernel to poll for IRQ changes. -Ross ----- Original Message ----- From: centos-bounces at centos.org <centos-bounces at centos.org> To: CentOS mailing list <centos at centos.org> Sent: Wed Feb 06 08:03:47 2008 Subject: Re: [CentOS] Re: system gets suspended automatically! On Wed, 2008-02-06 at 21:48 +0900, Chandra wrote: > =========================================================== > AN ERROR IS SHOWING UP AT BOOT TIME. It seems to be a BUG: > ============================================================ > Memory for crash kernel (0x0 to 0x0) notwithin permissible range > ..MP-BIOS bug: 8254 timer not connected to IO-APIC > Red Hat nash version 5.1.19.6 starting > Welcome to CentOS release 5 (Final) > .... > ..... > and continues normal booting. > > Any idea how to deal with it. > Please not that it has 4 CPUs. > > Thanks a lot, > - Chandra > _______________________________________________ Check the Release Notes. It is apparently harmless. I see it on all my CentOS 5.1 machines. B.J. Ubuntu 7.10, Linux 2.6.22-14-generic unknown 08:02:44 up 21:42, 2 users, load average: 0.15, 0.22, 0.16 _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080206/997bc07e/attachment-0005.html>