Hi, Perhaps you already checked for this but my uneducated guess on this is that it has to do with buggy ACPI. Check out http://gentoo-wiki.com/ACPI for example. Alexander On 8/11/06, Andrew Randles wrote: > > I don't have much to add but I have the same problem with my TP T42. > If I boot without ac and check the the cpuinfo it will say it is > running at full speed (1.8 Ghz). It feels like 600 Mhz or slower from > some compile tests I have done. > > If anyone has a suggestion I would love to hear it. > > Andrew > > On 8/11/06, Will Briggs wrote: > > G'day all, > > > > Having an interesting phenomenon when I boot my Dell Inspiron 6400 to > > linux without AC plugged in. The boot process is as slow as a dog, all > > the fans are maxed "on", and cpufrequency shifting gets stuck at 1 GHz > > like the governor is not working (and the slowness is more than what the > > cpu frequency shifting would cause). > > > > However if I boot with AC and then unplug it everything works well under > > battery - cpu steps up and down with demand, fans behave properly etc. > > > > I wondered at first if the BIOS switches stuff off under battery so that > > various modules don't load or something but there's nothing obvious in > > dmesg and lsmod looks fine - and I've check out BIOS settings to see if > > there's anything - and there isn't. > > > > Any clue where to begin diagnosing such an issue? > > > > W. > > -- > > gentoo-laptop@gentoo.org mailing list > > > > > -- > gentoo-laptop@gentoo.org mailing list > > -- ================================== Alexander Jerneck ---------------------------------- ==>> Aug 15 2006 Arkivgatan 10 S-223 59 Lund SWEDEN cell: +46 736 26 08 92 tel: +46 46 12 12 76 ---------------------------------- blog: kalifornien.blogspot.com msn: alexander.jerneck@a.com aim: ajerneck skype: alexander.jerneck ==================================