microcode driver fails on PIII-Celeron

microcode driver fails on PIII-Celeron

[Joseph Fannin]

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    The microcode driver in the kernel fails for me on my laptop with
a PIII-era Celeron 900.  I've tested both 2.4 and 2.5 kernels over
course of a year or so; all abort with the same error when trying to
load the microcode:

microcode: CPU0 no microcode found! (sig=68a, pflags=32)

    My amateur reading of the code leads me to think the processor
might be misidentified somehow (or something, my head doesn't like bit
operations).

/proc/cpuinfo:
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Celeron (Coppermine)
stepping        : 10
cpu MHz         : 897.366
cache size      : 128 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        : 1773.56

    FWIW, this is a Debian unstable system, using the microcode
utilities as packaged for Debian.  The laptop is a Dell Inspiron 2500,
based on the i815 chipset.

    Is this a bug, or is this really not supposed to work?

--
Joseph Fannin
jhf@rivenstone.net

"That's all I have to say about that." -- Forrest Gump.

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Re: microcode driver fails on PIII-Celeron

[Tigran Aivazian]

This is not a bug. It simply means that there is no microcode data for 
your processor. So, I recommend disabling invocation of microcode_ctl on 
startup until there is a latest set of microcode data which contains a 
chunk for your cpu (i.e. until your cpu has some bugs worthy of fixing :)

Regards
Tigran

On Mon, 5 May 2003, Joseph Fannin wrote:

>     The microcode driver in the kernel fails for me on my laptop with
> a PIII-era Celeron 900.  I've tested both 2.4 and 2.5 kernels over
> course of a year or so; all abort with the same error when trying to
> load the microcode:
> 
> microcode: CPU0 no microcode found! (sig=68a, pflags=32)
> 
>     My amateur reading of the code leads me to think the processor
> might be misidentified somehow (or something, my head doesn't like bit
> operations).
> 
> /proc/cpuinfo:
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 8
> model name      : Celeron (Coppermine)
> stepping        : 10
> cpu MHz         : 897.366
> cache size      : 128 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        : 1773.56
> 
>     FWIW, this is a Debian unstable system, using the microcode
> utilities as packaged for Debian.  The laptop is a Dell Inspiron 2500,
> based on the i815 chipset.
> 
>     Is this a bug, or is this really not supposed to work?
> 
> --
> Joseph Fannin
> jhf@rivenstone.net
> 
> "That's all I have to say about that." -- Forrest Gump.
> 

Re: microcode driver fails on PIII-Celeron

[Tigran Aivazian]

btw, I assume that you have the latest microcode data downloaded from:

http://www.urbanmyth.org/microcode

On Mon, 5 May 2003, Tigran Aivazian wrote:

> This is not a bug. It simply means that there is no microcode data for 
> your processor. So, I recommend disabling invocation of microcode_ctl on 
> startup until there is a latest set of microcode data which contains a 
> chunk for your cpu (i.e. until your cpu has some bugs worthy of fixing :)
> 
> Regards
> Tigran
> 
> On Mon, 5 May 2003, Joseph Fannin wrote:
> 
> >     The microcode driver in the kernel fails for me on my laptop with
> > a PIII-era Celeron 900.  I've tested both 2.4 and 2.5 kernels over
> > course of a year or so; all abort with the same error when trying to
> > load the microcode:
> > 
> > microcode: CPU0 no microcode found! (sig=68a, pflags=32)
> > 
> >     My amateur reading of the code leads me to think the processor
> > might be misidentified somehow (or something, my head doesn't like bit
> > operations).
> > 
> > /proc/cpuinfo:
> > processor       : 0
> > vendor_id       : GenuineIntel
> > cpu family      : 6
> > model           : 8
> > model name      : Celeron (Coppermine)
> > stepping        : 10
> > cpu MHz         : 897.366
> > cache size      : 128 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        : 1773.56
> > 
> >     FWIW, this is a Debian unstable system, using the microcode
> > utilities as packaged for Debian.  The laptop is a Dell Inspiron 2500,
> > based on the i815 chipset.
> > 
> >     Is this a bug, or is this really not supposed to work?
> > 
> > --
> > Joseph Fannin
> > jhf@rivenstone.net
> > 
> > "That's all I have to say about that." -- Forrest Gump.
> > 
> 
>