Core Duo SMP Support issue

[Sam Currie]

Hello everyone,

I'm sorry if this has been covered, but I've been Googling for a good
two hours now and I'm yet to find a solution.

My problem is that I have noticed by Ubuntu 8.04 install is only using
one core of my T5500 1.6 GHz CPU.  My machine is a Sony VGN-SZ32GP.
After some hunting I found the following interesting message from
dmesg, "SMP alternatives: switching to UP code".

I can offer the following diagnostic info:

A 'uname -a' spits out:
Linux sony-lappy 2.6.24-17-generic #1 SMP Thu May 1 14:31:33 UTC 2008
i686 GNU/Linux

A 'cat /proc/cpuinfo' spits out:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Core(TM)2 CPU         T5500  @ 1.66GHz
stepping	: 6
cpu MHz		: 1000.000
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc up arch_perfmon pebs bts pni monitor ds_cpl est tm2 ssse3
cx16 xtpr lahf_lm
bogomips	: 3337.74
clflush size	: 64

Does anyone have any ideas?  I put Ubuntu on to replace Vista which
was running like a dog.  Ubuntu has been very speedy and I can't wait
to unlock my second core!

Thank you for you help.

-Sam