Probles with Core Duo processor

[Christian Schuerer <debian.lists@quincunx.at>]

Hello,

I've Debian testing/sid installed on a Sony notebook (VGN-SZ1M/B), which has a 
Intel T2300 dual core processor in it. I tried the latest 2.6.17 and 2.6.18 
kernel.

Unfortunately, only one processor core is recognised. I had Kubuntu 
6.06/Dapper installed before (2.6.15-kernel), which saw both processor cores.

Do I need to load any special modules? Shouldn't the kernel be SMP-capable? 
How can I get the 2nd core to work?

Thanks for your help in advance,

   Christian

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cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 14
model name      : Genuine Intel(R) CPU           T2300  @ 1.66GHz
stepping        : 8
cpu MHz         : 1667.000
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 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc up 
pni monitor vmx est tm2 xtpr
bogomips        : 3337.61
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