Ive searched google and both the debian and mint forums and can't find much help with the issue.
I have ubuntu, backtrack, and arch installed on separate partitions and they all report 8 cpu cores correctly.
If there is any other information required please ask, if anyone knows of an answer please post a link.
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$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz
stepping : 7
cpu MHz : 800.000
cache size : 6144 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc up arch_perfmon pebs bts nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 x2apic popcnt aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid
bogomips : 4390.37
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
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$ inxi -C
CPU: Single core Intel Core i7-2720QM (-UP-) cache 6144 KB flags (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) clocked at 800.00 MHz
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$ uname -a
Linux vetus-katya 3.0.0-1-amd64 #1 SMP Sun Jul 24 02:24:44 UTC 2011 x86_64 GNU/Linux