I have a HP zbook 15 with hybrid graphics (Intel/nvidia).
I want to save power and only use the Intel GPU in Ubuntu 14.04. I am dual booting between windows 7 (for work) and Ubuntu 14.04. So I can't turn the nvidia GPU of in the bios because I need it in windows 7.
I have tried to use nvidia-prime/nvidia 331 and 340 like this:How to turn off nvidia (hybrid graphics)
But both GPU is turned on at the same time and using a lot of power. Take a look at this:
Is there any other way for me to turn the nvidia card off?
22 Answers
Pretty simple, just remove the nvidia drivers from your Ubuntu install. While using nvidia-prime to switch should work fine, if you're only going to use the Intel gpu then get rid nvidia drivers & associated packages, no need for them at all.
4acpi_call
If you just want to have long battery life and slow temperature, you can use acpi_call: a linux kernel module that enables calls to ACPI. With acpi_call_GUI you can easily install and configure it via graphic interface.
It is a java program that allows you to:
- install the acpi_call kernel module (kernel would be recompiled automatically after each update);
- Deactivate discrete GPU;
- Automatically deactivate discrete GPU on every boot.
If you have enabled systemd, or if you're using other linux distros that support it, you can use acpi_call_GUI_systemd.
See here:
Installation
Ensure that you have installed java and git, if not install these packages: git and openjdk-7-jre
After that open a terminal and type the following commands:
git clone
cd acpi_call_GUI
sudo chmod +x install.sh
sudo ./install.shHow to use
To launch acpi_call_GUI search it in yuor dash and click on the icon, or type in a terminal:
sudo java -jar $HOME/acpi_call_GUI.jar
If you have a separate /home partition, you may need to use this command to launch acpi_call_GUI:
sudo java -jar /usr/local/bin/acpi_call_GUI/acpi_call_GUI.jar
Here's a step-by-step video tutorial that shows how to use this software
FROM:
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