Hi *, > > Oh. That's interesting. This may also explain the sudden drops in CPU > > frequency while working (power plugged in and online serving ...). > > Maybe my > > BIOS is broken ... I'm owning a Dell Latitude D810 and the BIOS. > > I remember Dells limiting via _PPC call. They needed special handling > because they also reduced the freq on their own instead of leaving > this to one instance, the OS. > > > Ok. I'm going to grab the current kernel-sources and compile along > > with your patch to check my hw_limit data. So, I got myself the linux-2.6.31-rc6 from kernel.org, compiled it and installed it. I also went on to get any BIOS updates from DELL and flashed anything on the laptop, which wasn't fast enough to run and hide. Things differ a bit, since I managed to get 1,87 GHz ... but just for a few seconds. I'm currently stuck at 1.33 GHz. Though my systems tells me I could run at 2.13 GHz, I'm not able to switch to this speed. Anyway ... I don't get a hw_limit file in the /sys/*/cpufreq/. I looked at make menuconfig in the kernel, but missed to see if I had to turn on any extra switches. Do I miss somthing, or is this the wrong kernel version? # uname -a Linux demandred 2.6.31-rc6 #1 SMP PREEMPT Fri Aug 14 10:18:33 CEST 2009 i686 Intel(R) Pentium(R) M processor 2.13GHz GenuineIntel GNU/Linux # find /sys/devices/system/cpu/ -iname "*hw*limit*" # BTW: where are the max frequencies for the several governors stored? How do they compute? kR: Oliver
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