cpu not detected(x86)

cpu not detected(x86)

[Nico Schottelius]

[-- Attachment #1: Type: text/plain, Size: 426 bytes --]

Hello!

I am trying to run 2.4.7 and have heavily problems with my cpu.
The kernel retected another speed at every start! I attached
three times CPUINFO. The cpu in reality is a p3 650 mhz speedstep.
(may switch down to 500 mhz, but 126 _not_).

Who changed something in the 2.4.7 source ?
I am more or less unable to run X with netscape to write this email
with 126 Mhz!

What to do, where to fix ? Please help asap!

Nico



[-- Attachment #2: CPUINFO --]
[-- Type: text/plain, Size: 376 bytes --]

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 8
model name	: Pentium III (Coppermine)
stepping	: 6
cpu MHz		: 161.858
cache size	: 256 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 330.95


[-- Attachment #3: CPUINFO2 --]
[-- Type: text/plain, Size: 376 bytes --]

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 8
model name	: Pentium III (Coppermine)
stepping	: 6
cpu MHz		: 127.553
cache size	: 256 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 244.94


[-- Attachment #4: CPUINFO3 --]
[-- Type: text/plain, Size: 376 bytes --]

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 8
model name	: Pentium III (Coppermine)
stepping	: 6
cpu MHz		: 162.371
cache size	: 256 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 317.84

Re: cpu not detected(x86)

[Dave Jones]

On Tue, 7 Aug 2001, Nico Schottelius wrote:

> Hello!
>
> I am trying to run 2.4.7 and have heavily problems with my cpu.
> The kernel retected another speed at every start! I attached
> three times CPUINFO. The cpu in reality is a p3 650 mhz speedstep.
> (may switch down to 500 mhz, but 126 _not_).

Speedstep is voodoo. No-one other than Intel have knowledge of
how it works. On my P3-700 I've seen speeds range from as low
as 2MHz[1] -> 266MHz (using an ACPI kernel), and the 550/700 on APM.
I've also seen other laptops do speed scaling between 2MHz->full clock
speed whilst on APM.

Run the MHz tester (URL below), and put the box under some load.
It should increase the MHz accordingly.  How high it goes seems
to depend on how good your BIOS support for it is.

Also try switching between ACPI & APM kernels, to see what
difference it makes.

regards,

Dave.

[1] Actually slower than this, the MHz calculation code takes some
cycles, so it's an estimate only. http://www.codemonkey.org.uk/MHz.c

-- 
| Dave Jones.        http://www.suse.de/~davej
| SuSE Labs

Re: cpu not detected(x86) (ACPI!)

[Nico Schottelius]

It's me again. Running without ACPI seems to
fix the problem. Possibly this bugs comes from
acpi.

Can someone check that ?

Nico

Nico Schottelius wrote:

> Hello!
>
> I am trying to run 2.4.7 and have heavily problems with my cpu.
> The kernel retected another speed at every start! I attached
> three times CPUINFO. The cpu in reality is a p3 650 mhz speedstep.
> (may switch down to 500 mhz, but 126 _not_).
>
> Who changed something in the 2.4.7 source ?
> I am more or less unable to run X with netscape to write this email
> with 126 Mhz!
>
> What to do, where to fix ? Please help asap!
>
> Nico
>
>   ------------------------------------------------------------------------
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 8
> model name      : Pentium III (Coppermine)
> stepping        : 6
> cpu MHz         : 161.858
> cache size      : 256 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 2
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
> bogomips        : 330.95
>
>   ------------------------------------------------------------------------
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 8
> model name      : Pentium III (Coppermine)
> stepping        : 6
> cpu MHz         : 127.553
> cache size      : 256 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 2
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
> bogomips        : 244.94
>
>   ------------------------------------------------------------------------
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 8
> model name      : Pentium III (Coppermine)
> stepping        : 6
> cpu MHz         : 162.371
> cache size      : 256 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 2
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
> bogomips        : 317.84

Re: cpu not detected(x86)

[Luigi Genoni]

On Tue, 7 Aug 2001, Nico Schottelius wrote:

> Hello!
>
> I am trying to run 2.4.7 and have heavily problems with my cpu.
> The kernel retected another speed at every start! I attached
> three times CPUINFO. The cpu in reality is a p3 650 mhz speedstep.
> (may switch down to 500 mhz, but 126 _not_).
>
> Who changed something in the 2.4.7 source ?
> I am more or less unable to run X with netscape to write this email
> with 126 Mhz!
Sometimes i use an old Pentium 133 classic (no mmx), and it works, well to
do this with X11 and netscape. I think we are starting to be used to PC
that are too powerful. :) If you go to fast how can you see where you are
going? ;)
OK, it was a joke...

I would like to know, if your CPU is on a laptop, are you sure that your
power management works well?

Is it working ok with 2.4.6? and 2.4.8-pre3?

Luigi

Re: cpu not detected(x86)

[Nico Schottelius]

Luigi Genoni wrote:

> On Tue, 7 Aug 2001, Nico Schottelius wrote:
>
> > Hello!
> >
> > I am trying to run 2.4.7 and have heavily problems with my cpu.
> > The kernel retected another speed at every start! I attached
> > three times CPUINFO. The cpu in reality is a p3 650 mhz speedstep.
> > (may switch down to 500 mhz, but 126 _not_).
> >
> > Who changed something in the 2.4.7 source ?
> > I am more or less unable to run X with netscape to write this email
> > with 126 Mhz!
> Sometimes i use an old Pentium 133 classic (no mmx), and it works, well to
> do this with X11 and netscape. I think we are starting to be used to PC
> that are too powerful. :) If you go to fast how can you see where you are
> going? ;)
> OK, it was a joke...
>
> I would like to know, if your CPU is on a laptop, are you sure that your
> power management works well?

No, seems like ACPI killed the cpu speed.
I can't undernstand why ACPI is not marked EXPERIMENTAL,
if those things are normal!

> Is it working ok with 2.4.6? and 2.4.8-pre3?

Sorry, only tested 2.4.7.
Maybe I can test 2.4.8 in the next days.


Nico