2011/8/23 Ben Hutchings <[email protected]> > On Tue, 2011-08-23 at 13:30 +0100, Ben Hutchings wrote: > > On Tue, 2011-08-23 at 09:33 +0200, Grzegorz Kochański wrote: > > > > > > It works on my T42 with the 1.8 GHz version of this processor, > > > using > > > lenny, squeeze and sid kernel versions. The BIOS version is > > > 3.05a. > > > Maybe there was a regression in a later BIOS version? > > > > > > Ben. > > > > > > > > > I have applied the newest BIOS version available at lenovo support for > > > my T42 (model 2374): > > > BIOS Version 3.23 (1RETDRWW) > > > BIOS Date 2007-06-18 > > > Embedded Controller Version 3.03 > > > CPU Type Intel(R) Pentium(R) M processr, > > > CPU Speed 1.53GHz > > [...] > > > > Previously you said 1.73 GHz... and Wikipedia doesn't mention a 1.53 GHz > > version so I think that was correct. > > > > Is 'Intel(R) SpeedStep technology' enabled in the BIOS? > > > > Have you run any other kernel version or distribution, in which the > > acpi-cpufreq driver? > ...works? > > Ben. > > sorry for so not long responding, I was fighting with Embedded Controller Version 3.03 and finally it is 3.04, but nothing else has changed.
I did not make a mistake BIOS presents: CPU Speed 1.53GHz what is the source of /proc/cpuinfo ? when I load and unload patched speedstep-centrino module /proc/cpuinfo stucked with single frequency, even it was changed by ondemand kernel governor. so it seems to be still BIOS problem... rgds rumi
