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Re: headless conf loses a cpu



>>On Thu, 2006-09-07 at 15:30 +0100, T. Horsnell wrote:
>>> Here I am again. Thanks to your help I've got
>>> my system running in headless mode. However,
>>> in this mode, it only sees one of the dual-core
>>> cpus. If I plug in (any old) VGA adapter, and 
>>> reboot (still in headless mode), it sees both.
>>> 
>>> Its an Intel Core2Duo processor on an Intel
>>> D975XBX mobo, running FC5, 2.6.16-1.2133_FC5smp
>>> kernel. Multi-cpu is enabled in the BIOS, and
>>> the BIOS docs confirm that this board should
>>> operate properly with no VGA, mouse or kbd.
>>> 
>>> My BIOS is at v. 1334, and there is one
>>> further upgrade which doesnt refer to this
>>> problem.
>>> According to the BIOS support site, BIOS
>>> support for the Core2Duo was only released
>>> in v. 1334 on 12 July 2006, so maybe this
>>> problem hasnt been seen before.
>>> 
>>> Any ideas (again)?
>>> 
>>> Cheers,
>>> Terry.
>>
>>What does /proc/cpuinfo say?
>


[root fmtest]# cat /proc/cpuinfo 

With a VGA plugged in:
----------------------

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1596.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4809.09

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1596.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4800.48

Without a VGA plugged in:
------------------------
processor       : 0 
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 2400.487
cache size      : 4096 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     : 10      
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov$
bogomips        : 4807.15


Cheers,
Terry.


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