I currently run this laptop with Red Hat Linux 7.3, everything works fine, modem (hsf driver), video (no 3d accel, need Utah-GLX drivers), DVD/CDRW combo drive (with a little hacking in the rc.local to set DMA), touchpad, ehternet, firewire, USB, etc. But I still can't find anyway to actually use the PowerNow! feature of the AthlonXP that comes with this computer. I know the Red Hat kernel comes with the CPU scaling patch with the sources, all I'd have to do is recompile the kernel with support for PowerNow (K62-K63), done that, but seem unable to find any user space programs to actually lower the cpu clock. I have the latest (RH) kenel, upgraded GCC to 3.2 and glibc to 2.3*, and my questions here are:

Is There a way to get powersaving with this laptop? What is the best kernel+kenrel patch to use? and What is the best user space app to use with it?

Thanks.
Thetargos.

*If you really wanna know how did I do it, I took the rpms from the RH 9 installation CD and then hunt the dependencies down.

Do you have anything in /proc/sys/cpu/0/frequency or somewhere thereabouts? if so, try using "echo ### > /proc/sys/cpu/0/frequency where the ### represents a reasonable figure and see what happens, if it works, you may find you can put together a shell-script or an application to meet your needs.

I have tried running cpudyn, cpufreqd, and see what happens if I try to lower the speed of my CPU, but all I get from cat /proc/cpufreqd is this cpufreqd minfrequency maxfrequency profile or something like that, and after trying to put it manually into powersaving mode, lowering the frequency, cat /proc/cpuinfo shows the same info as ever, no bogomips, nor frequency alterered. So if I chose a Vanilla kernel, which patches would I need to apply in order to get the CPU frequency scaling, and the performance hacks? given that the latest kernel is 2.4.21

Thanks in advance.

sorry, like a bad frisbee toss, that last question sailed completely over my head, I'm not familiar enough with that kernel (the latest one I run is 2.4.21-pre2 and it's not on a box that can scale cpu freqs) to give any good advice on patches. my thinkpad cpu scaling is done through smapi bios calls and a corresponding module/user space app, it's fairly automatic(read: doesn't have a lot of options).

did you try a direct echo to the /proc file in question? I actually read a few posts on the kernel mailing list where that really did work. OTOH, I suspect those progs you posted must do something similar to that, so maybe it won't work for you. It seems AMD would be the most likely source of info on this.

Thanks for your reply, akaBeaVis... I'll look into it.