Arch Linux

hotsauce

Member

From: Ann Arbor

Registered: 2005-12-28

Posts: 125

Triple core - Only one recognized by arch

Hi everyone,

I need some help with a major problem I'm having.

Just purchased a new pc with an amd phenom triple-core. On boot, I get an error message that says: "CPU #1 not responding. Cannot use it."

The output of cat /proc/cpuinfo is this:

processor    : 0
vendor_id    : AuthenticAMD
cpu family    : 16
model        : 2
model name    : AMD Phenom(tm) 8400 Triple-Core Processor
stepping    : 2
cpu MHz        : 2094.851
cache size    : 512 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    : 5
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 pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs ts ttp tm stc 100mhzsteps hwpstate
bogomips    : 4194.29
clflush size    : 64

and the output of uname -a is this:

Linux myhost 2.6.25-ARCH #1 SMP PREEMPT Sat Jun 14 18:07:19 CEST 2008 i686 AMD Phenom(tm) 8400 Triple-Core Processor AuthenticAMD GNU/Linux

There doesn't seem to have much info on the web about my particular hardware on linux so I am at a loss here. Does anyone have a clue as to how I could go about using all of my hardware?

By the way, same problem on Ubuntu, but windows sees all three cores just fine.

Thanks a lot for your time!

Vincent

hotsauce

Member

From: Ann Arbor

Registered: 2005-12-28

Posts: 125

Re: Triple core - Only one recognized by arch

Fixed by installing a 64 distro...

hotsauce

Member

From: Ann Arbor

Registered: 2005-12-28

Posts: 125

Re: Triple core - Only one recognized by arch

This thread comes up on google and I saw a reference to it on another forum so here is an update:

All three cores are now recognized, even in arch 686

I assume that the main difference is the new kernel.