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Only one CPU showing in /proc/cpuinfo

post #1 of 2
Thread Starter 
I'm kind of a Linux noob so not sure where to look.
This used to show up as two CPU's but I am now getting the following:
Code:
root@fs:/home/beers# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 35
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
stepping        : 2
cpu MHz         : 2194.711
cache size      : 1024 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
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 up rep_good extd_apicid pni lahf_lm cmp_legacy arat
bogomips        : 4389.42
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

..and that is it. No other core listed. It looks like the kernel supports SMP so I am doing a headscratch.gif
Code:
root@fs:/home/beers# grep -iE "sched_smt|sched_mc|x86_ht" /boot/config-$(uname -r)
CONFIG_X86_HT=y
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
Code:
root@fs:/home/beers# uname -a
Linux fs 2.6.35-30-server #61-Ubuntu SMP Tue Oct 11 18:09:44 UTC 2011 x86_64 GNU/Linux

Any thoughts?
Waiting on X399
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Waiting on X399
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CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
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250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
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post #2 of 2
Have recently upgraded the distro ?

use "dmesg |more" and look for "switched to NOHz" and see how many cores does it show up.
SR71
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SR71
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RAMRAMHard DriveOptical Drive
Hyundai Electronics  Hyundai Electronics  WD 360 GB / 160 GB Sony 
CoolingOSMonitorKeyboard
Cooler Master Hyper TX3 (Push & Pull) Win 7 64 bit / Suse 12.1 64 Acer 20 " Led Wide Logitech 
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VIP Gold 500w Cooler Master Elite 370 Logitech My Underwear 
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