[NZLUG] problems with frequency scaling

Robin Paulson robin at bumblepuppy.org
Mon Jun 3 18:45:20 NZST 2013


On Fri, May 31, 2013 at 02:06:42PM +1200, Daniel Lawson wrote:
> The flags in cpuinfo list est, which is the code for Enhanced Speedstep. However, I've seen anecdotes that the presence of a flag does not necessarily indicate that the feature is enabled in the BIOS (this was the case for the vmx flag at any rate).   You haven't mentioned checking your BIOS for relevant configuration, so I think that's worth trying.

ok, i looked in the bios, it is the simplest i've ever seen, there are very few settings. and there's nothing to turn speedstep on or off

> The 'kernel' isn't recompiled in any way during install or boot, but the initramfs (if your OS uses one) is built during install and during kernel upgrades. However, as it worked before and doesn't work now, I can't see it being kernel/initramfs related. 

i've upgraded the kernel since then anyway, so i can't see it being related to that either


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