Single core dual core amd cpu? [solved]

[bmeagle]

I bought myself a X2 amd 64bit 4200+ with a GA-K8NXP-SLI mobo.
It appears to me that the cpu is a half baked dual core:
x86info reveals:

x86info v1.21. Dave Jones 2001-2007
Feedback to <davej@redhat.com>.

Found 1 CPU
--------------------------------------------------------------------------
Family: 15 Model: 43 Stepping: 1
CPU Model : Athlon 64 X2 Dual-Core (BH-E4)
Processor name string: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+

Feature flags:
fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflsh mmx fxsr sse sse2 sse3
Extended feature flags:
fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 nx mmxext mmx fxsr ffxsr lm 3dnowext 3dnow lahf/sahf

SVM: revision 0, 0 ASIDs
Address Size: 48 bits virtual, 40 bits physical
The physical package has 2 of 2 possible cores implemented.

and cat /proc/cpuinfo reveals:

processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
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 lm 3dnowext 3dnow up rep_good pni lahf_lm
bogomips : 4425.41
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

I can´t see separate core loads. The cpu cores : 1 reported bothers me.
What gives, is this a bios issue or cpu?
Thanx

[eccerr0r]

could be bios or kernel issue.

Make sure BIOS has SMP turned on or has SMP support (detects 2 cpus)
See if ACPI makes a difference - turn on ACPI if it's off.
Make sure your kernel supports SMP too!

[schachti]

Did you enable SMP in your kernel? Enabled SMP support in the BIOS?

[bmeagle]

I have SMP in the kernel.
But so far I don´t see a SMP setting in the BIOS.

[bmeagle]

Solved!
Problem was the BIOS, rev F9 implemts the manchester (what I have) and toledo cores.
BIOS was on rev F7, flashed it too F11 and viola!
cat /proc/cpuinfo now reveals:

processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2211.354
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4425.42
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

processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2211.354
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4422.96
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

Thanx guys!