[ltp] Thinkpad R40 2722: various CPUFREQ troubles

Sebastian Kapfer linux-thinkpad@linux-thinkpad.org
Sun, 14 Dec 2003 22:12:35 +0100

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Am So, den 14.12.2003 schrieb Alexander Gran um 02:25:
> Hash: SHA1
> Am Freitag, 12. Dezember 2003 21:51 schrieb Sebastian Kapfer:
> > When I wrote 600 MHz, I meant CPUFREQ's maximum freq. CPUFREQ offers
> > frequencies between 75 (?!) and 600 MHz. With power chord (and a
> > reboot), it goes up to 1500 MHz.
> Ahh, now I see. You need the "enchanced speed step" option of cpufreq. Yo=
> kernel is using P4-clockmod, which doesn't work as expected.

That's the root of the problem. When I remove the clockmod driver, the
kernel starts using the centrino driver, which can use frequencies
between 1500 and 600 MHz. I had assumed that Linux chooses the most
appropriate driver on its own. Thank you very much Alex!

Also, the battery-under-ACPI issue has disappeared. I simply forgot to
uncomment the battery line from /etc/modules. :-|

Everything besides shutting the system down and standby modes works
properly now. I'll install a test11 kernel now and see if that helps.

Again, thanks to everybody for their suggestions, especially Alexander!

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