AMD Turion(tm) 64 Mobile Technology MK-38 Problem - Single Core Recognized instead of Dual

Dear All:

I just bought a HP Compaq n6515b Notebook. I installed Debian Etch with

Linux -image-2.6.18-4-amd64- SMP

But it does not recognized the Dual core AMD CPU. the CPUinfo was shown below:

cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 76
model name      : AMD Turion(tm) 64 Mobile Technology MK-38
stepping        : 2
cpu MHz         : 2194.953
cache size      : 512 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow up pni cx16 lahf_lm svm cr8_legacy
bogomips        : 4403.56
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

How to enable Etch to recongize the dual core CPU ?

Any one can help ?

K. M. Lau