Re: Mobile Intel Pentium(R) 4 - M CPU 2.60GHz - kernel 2.6.3

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2004-02-27T18:33:54Z

Same box, same problem. (Different kernel, 2.4) Its thermal limiting -
you -really- want cpufreq (or at least acpi) so that linux knows whats
going on. I've found that running 'i8kfan 2 2' (blast fans), hit fn-z
(tell bios to reset fans) and then setting the fans to 1 1 (medium) will
keep it from happening, much of the time.

Alternately, just fn-z might do it, but it'll kick in again..

(Basically, the cooling on this thing sucks under heavy workloads.)

On Thu, 2004-02-26 at 19:46, Bob Dobbs wrote:
> Hello,
>
> I am currently running kernel 2.6.3 on my Dell Inspiron 8500 laptop.
> I disabled all the ACPI and APM options in the kernel.
>
> I have upgraded my bios
> I have tried from kernel 2.4.23 up to mm and love-sources and my current kernel 2.6.3.
>
> What happens is during heavy loads my cpu drops from 2.60GHz down to 1.20GHz, this happens for a few minutes, say 5 - 10 at the most. But performance while running a game, puts the game into slow motion. (Which is weird because 1.20GHz should be more than enough to run all of the games I currently have). I have read up on the documentation in /usr/src/linux/Documentation, under the "power" and "cpu-freq" but after disabling ACPI and such, those options do not seem to work anymore.
>
> I have also tried running a program called "cpufreqd" which launches at boot time, but once again without ACPI enabled in the kernel this seems not to work either. Also /sys/devices/system/cpu/cpu0/cpufreq/ has the following files.
>
> cpuinfo_min_freq
> cpuinfo_max_freq
> scaling_min_freq
> scaling_max_freq
>
> I even tried to echo the options at bootup:
>
> echo 2600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq &
> echo 2000000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq &
>
> I tried to make those files set at: 2.00GHz min and 2.60GHz max, but something changes them right back to 1.20GHZ no matter what I do.
>
> I am sure I am missing something, but atm I am totally lost.. and I could surely be doing everything wrong to begin with... that is why I am asking for help.
>
> Is there a patch or anything to force the cpu to run at 2.60GHz all the time?
>
> Thank you
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