Red Hat Bugzilla – Bug 144584
cpuspeed not loading powernow-k8
Last modified: 2015-01-04 17:15:10 EST
Description of problem: I have a Compaq R3000z which has an Athlon64 processor (supporting AMD's Cool and Quiet). While cpuspeed works fine when I bootup the x86_64 system, it does not work by default on when I boot the i386 (i686) system. The reason is that the powernow-k8 kernel code is compiled into the kernel for x86_64 while it is a module for the i686 kernel. With this situation, cpuspeed will not load powernow-k8 until /etc/cpuspeed.conf is changed to specify the powernow-k8 DRIVER. It is not obvious that this needs to be done. Version-Release number of selected component (if applicable): kernel 2.6.9-1.724_FC3 on both i386 and x86_64 How reproducible: everytime
Booting the smp kernel vs. the single processor kernel, powernow does not work for me. The module works great on an HP ze4315us.
Created attachment 116499 [details] powernow-k7 commented out. works in regular kernel not smp Since the kernel may eventually be only available only in smp versions, I decided to see if I can get this to work with the smp kernel. I first tried booting the smp for the sole purpose that the uni kernel would not boot. Later information reveals that it might be desirable to supply only the smp version. Thanks for the lead w/ information in this bug ticket. It was neither cool nor quiet without the module in the smp kernel.
Created attachment 116501 [details] uncommenting the items then rebooting into the smp Uncommenting the items related to powernow-k7 does not work using the smp kernel. I did not modprobe for the module while in the smp kernel.
With the release of Fedora Core 5 test2, FC3 has now reached end-of-life. The fedora-legacy team provide security updates for older releases, but not general bug fixes due to limited resources. If you can reproduce this bug with Fedora Core 4, please feel free to reopen this bug.