Intel P-state and CPUFreq Manager Widget
What it is
Intel P-state and CPUFreq Manager is a KDE Plasma widget in order to control the frequencies of Intel CPUs and their integrated GPUs for any modern Intel Processors running in Active Mode with HWP or Active Mode Without HWP. It can also manage the processor's energy consumption through Energy-Performance Preference (EPP) knob (if supported) or the Energy-Performance Bias (EPB) knob (otherwise).
Furthermore, it allows you to interact with the following vendor specific settings
What it isn't
This is just a GUI widget and it is not meant to replace
TLP, powertop or
any other power management / energy consumption service. It is meant just to
provide quick access to
sysfs settings related to Intel Processors and
in fact it can run on top of TLP.
As the trend in modern laptops continues to be more CPU power in more slim chassis design and as the software and becomes more demanding, it is becoming harder to find a combination of power performance and/or energy consumption settings to fit all your daily tasks that require different levels of performance.
This widget's purpose is to expose to the user hardware and kernel settings that may be useful in cases you need to adjust such a setting from the comfort of your graphical interface using point and click or tap interactions even in cases that a keyboard isn't available.
How to install
First of all you need to be in sudoers' group. After that you can just clone the code and install it using the following commands:
git clone https://github.com/jsalatas/plasma-pstate cd plasma-pstate sudo ./install.sh
Notice: If your processor doesn't support EPP(ie older generations without
HWP), then you need also to install the
x86_energy_perf_policy which (in
case of Ubuntu 18.04 distros) is provided by the
linux-tools package and
can be installed using the following command
sudo apt-install linux-tools-generic linux-tools-`uname -r`
How to update
Assuming that you have checked out the latest code, you just need to run the following commands as root:
sudo plasmapkg2 -t plasmoid -g -u gr.ictpro.jsalatas.plasma.pstate sudo chmod 755 /usr/share/plasma/plasmoids/gr.ictpro.jsalatas.plasma.pstate/contents/code/set_prefs.sh
Please feel free to clone, hack, and contribute anything you may find useful, especially in relation to similar to Dell's Thermal Management Feature that may be available in other hardware platforms.
The widget uses a shell script that needs to be run as root user (sudo) and which apparently floods your log files with security related messages as described in issue #16.
If you want to get rid of these messages, please see a workaround at