Can't get my Centrino laptop working with frequency scaling

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

Hi all...I think that my problem has been discussed lots of times before...But i still can't get my laptop working with frequency scaling.
No module seems to work, nor 'speedstep_centrino' nor 'acpi_cpufreq'.
I'm working on a Dothan 1.6GHz centrino processor and a kernel '2.6.19-suspend2-r1'.
I followed lots of howto's on web, i checked my DSDT too (it was correct).
I'm sure that it should work (i could get freq. scaling working on Ubuntu kernel 2.6.17) and i can't figure out why it wouldn't work...

The exact error I get:

"FATAL: Error inserting speedstep_centrino (/lib/modules/2.6.19-suspend2-r1/kernel/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.ko): No such device"

So i excluded that my laptop is unsupported (a long long time ago worked with scaling) and DSDT...Help

bLUEbYTE84 · Posted: Sat Jan 13, 2007 1:35 pm Post subject:

I also have a centrino with a Dothan and it works perfectly.
Why not compile it into kernel?
Check my post here:
https://forums.gentoo.org/viewtopic-t-530098-highlight-.html

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

Thanks for help...but that's not my problem!
My problem is that kernel WON'T LOAD ANY cpu frequency scaling module even if i compiled as modules...
i followed gentoo power management howto and enabled all the necessary options in order to work with scaling but seems not to be enough...
Here's my /proc/cpuinfo:

albright · Posted: Sat Jan 13, 2007 8:34 pm Post subject:

OK, this is a dumb question, but are you sure that speedstep
is turned on in the bios?

bLUEbYTE84 · Posted: Sat Jan 13, 2007 8:49 pm Post subject:

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

Before compiling it as a module i tried to compile "built-in" but equally no result...

bLUEbYTE84 · Posted: Sat Jan 13, 2007 8:57 pm Post subject:

And you included all of the items I posted above, right? ACPI P-states stuff etc...

bLUEbYTE84 · Posted: Sat Jan 13, 2007 9:01 pm Post subject:

Also, notice:

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

So...
600MHz is the boot default frequency (displayed at boot and not manageable).

p1c2u · Posted: Mon Jan 15, 2007 8:14 pm Post subject:

I have the same problem
dmesg

bLUEbYTE84 · Posted: Mon Jan 15, 2007 8:20 pm Post subject:

p1c2u · Posted: Mon Jan 15, 2007 9:55 pm Post subject:

bLUEbYTE84 · Posted: Mon Jan 15, 2007 11:07 pm Post subject:

Here's my cpuinfo:

p1c2u · Posted: Mon Jan 15, 2007 11:51 pm Post subject:

I solved my problem. I've loaded the default values in BIOS after update.
Thanks for help

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

I've solved my problem too.
I compiled 2.6.17 ubuntu sources (the same kernel version that made scaling work before) with the option 'speedstep-centrino' built in.
Compiling has never been so fast!!!

bLUEbYTE84 · Posted: Tue Jan 16, 2007 12:45 pm Post subject:

Spy666 · n00b Joined: 13 Jan 2007 Posts: 6

I only thought that it could be an ubuntu kernel patch that correctly made scaling working with my architecture, so i tried...
Now it works but i still can't figure out why :-)

Timm · Posted: Mon Feb 05, 2007 11:17 pm Post subject:

On HP Compaq nx7400 Notebook sold before 2007 you must update your BIOS to get Speedstep working!
Check http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=1847095&prodTypeId=321957&prodSeriesId=1847094&swLang=8&taskId=135&swEnvOID=1093
for informations.

Note for Linux only User: The downloads are Windows XP executables, so you must have Windows XP available somewhere, to create a FreeDOS BIOS Installation Disk for your Notebook.
_________________
Timm