[CentOS] smp falls back to up mode on quad core

Tue May 27 23:22:45 UTC 2008
Julian Echave <julian.echave at gmail.com>

Thanks. I'll try the acpi thing.
Regarding the Bios, I've got the last version.
Kubuntu has no problems either to see the 4 cores...
I'll see what I can do tomorrow.

On Tue, May 27, 2008 at 6:29 PM, MHR <mhullrich at gmail.com> wrote:

> On Tue, May 27, 2008 at 1:41 PM, John R Pierce <pierce at hogranch.com>
> wrote:
> > Julian Echave wrote:
> >>
> >> Sure, find below, I add other stuff as well. Note that there is some bug
> >> in the Bios. This does not prevent Centos to boot, and, since Windows
> sees
> >> all four processors, I reckon it shouldn't be the problem...?
> >
> >
> > yeah, looks like its probably broken ACPI data in the BIOS.  see if the
> > mainboard or system vendor has a BIOS update to fix this.   just because
> > operating system "X" works, doesn't mean its 'right'.
> >
> You can try adding 'noacpi' to your boot string in your grub.conf file
> and see if that helps.
> I have an AMD Athlon 64 x2 on an ECS mobo that is known to have a
> problem with acpi.  If I try to run without the noacpi switch, it runs
> very poorly and crashes or halts within minutes of booting, if it
> boots at all.  With the flag, it runs smooth as silk.
> mhr
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20080527/30c3228d/attachment-0005.html>