On Fri, 18 Jun 2010, Jerry Geis wrote:
Peter Kjellstrom wrote:
On Friday 18 June 2010, Jerry Geis wrote:
I just installed centos 5.5 x86_64 on a new HP laptop. It has the core i5 processor.
only 1 cpu is detected should be 2.
dmesg is :
Linux version 2.6.18-194.3.1.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Thu May 13 13:08:30 EDT 2010 Command line: ro root=LABEL=/ rhgb quiet noapic acpi=off apci=off
I'll admit that I've never had to resort to "acpi=off", but my multi-core system all boot with a dmesg that says
Using ACPI (MADT) for SMP configuration information
In particular, your system reported
SMP: Allowing 0 CPUs, 0 hotplug CPUs
That doesn't look right. It should report that it allows multiple CPUs.
Can you boot this system without turning off acpi?