Fedora 19 on Vaio Pro 13 – Intel PState Support

As I mentioned in my previous post, Fedora 19 on the Vaio Pro 13 does not have proper CPU frequency scaling support.

While investing the issue I found this post. It confirms that the issue is simply a missing model id in the pstate driver and provides instructions (and a patch) for adding the CPU model to the Ubuntu kernel.

I have compiled the newly released 3.10 kernel with both the WiFi and CPU patch included.

The new kernel rpms are available at http://rpms.nicksplace.com.au/Fedora/19/x86_64/. When I get a chance I will upload the patches and srpms to make it easier for anyone who wants to compile their own.

I have created a repository to make downloading the packages easier, simply create a file called /etc/yum.repos.d/nicksplace.repo with text below or download this file:

[nicksplace]
name=Nicksplace Packages for Fedora
baseurl=http://rpms.nicksplace.com.au/Fedora/$releasever/$basearch/
enabled=1
skip_if_unavailable=1
gpgcheck=0

Don’t forget to update the GRUB2 configuration after installing the new kernel (if you don’t your new kernel wont show up in GRUB):

# grub2-mkconfig -o /boot/efi/EFI/Boot/grub.cfg

After installing the kernel and rebooting, run the following to confirm that the pstate driver is loaded:

# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver

If you see the words “intel_pstate” it means the installation was successful.

6 thoughts on “Fedora 19 on Vaio Pro 13 – Intel PState Support

  1. Yu Watanabe

    Nice article!

    If possible, I would like to have source rpm of the kernel rpm which you build, or the patches that you apply.
    Could you make the SRPMS repository?

    Reply
  2. Yu Watanabe

    One more question.
    Have you already submit these issues, especially wifi problem, are posted to Redhat Bugzilla? If no, I recommend that you post them.

    Reply
    1. Nick Brackley Post author

      I have not filed these issues in bugzilla but upstream has fixed them already so it should just be a matter of time. I will provide patches and SRPMs in a few days as I am currently away from my computer.

      Reply

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