Breezy upgrade, CPUFreq problem
'Forum Post
ulist at gs1.ubuntuforums.org
Mon Nov 21 21:34:20 UTC 2005
this is a problem that p4clockmod have under breezy...
P4 clockmod have been patched to not to go under 2.0 GB because of
intel N60 errata.... but patch does nort work well, and detect N60
errors on lots of P4 CPUs that doesn't have the errata... to see if you
have the errata detected on your system type:
cat /var/log/messages |grep p4-clockmod
and you will see:
p> 4-clockmod: has N60 errata - disabling frequencies below 2.0 GHz
> Nov 20 06:49:03 localhost kernel: [4294675.235000] p4-clockmod:
> disabling frequency 350000
> Nov 20 06:49:03 localhost kernel: [4294675.235000] p4-clockmod:
> disabling frequency 700000
> Nov 20 06:49:03 localhost kernel: [4294675.235000] p4-clockmod:
> disabling frequency 1050000
> Nov 20 06:49:03 localhost kernel: [4294675.235000] p4-clockmod:
> disabling frequency 1400000
> Nov 20 06:49:03 localhost kernel: [4294675.235000] p4-clockmod:
> disabling frequency 1750000
if the errata is not detected yo wil see:
> p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
you can restore the original not patched p4-clockmod (ignore N62
errata) many ways.
1) compile a vanilla kernel
2) recompile ubuntu kernel replacing p4-clockmod.c with another that
doesn't have been patched
3) change your p4-clockmod.ko file with one module compiled without the
patch
I can provide you with .c or .ko file (ko compiled for P4 on breezy,
kernel 2.6.12) if you send me a private message... telling me that you
want the file.. and your mail address.
EDIT: if somebody wants to host it... i can provide a full
kernel-image.deb (full breezy kernel package specific for P4 without
the N60 errata patch ) and so everybody can download it. (at his own
risk)
Note that if your cpu really have the N60 errata and you use the module
without the patch.. it will not be detected and your computer will
shutdown eventually a lot of times...
I hope this will help you.
PD: Sorry for my english... I don't speak english
--
djkork
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