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GPU Select

Balance performance and battery life

Select GPU to meet your needs. Use the Nvidia GPU to drive maximum performance and support three 4K external monitors. Use the Intel GPU to maximize battery life.

Please read the disclaimer before proceeding. This solution is updated regularly. Please write authorship with suggestions or requests.

Check GPU

Check GPU

Nvidia SettingsThe Nvidia Max-Q RTX GPU is needed for demanding tasks such as deep learning, video editing, or gaming. However, if you aren't using those capabilities, switching to the integrated graphics can extend battery life up to 5 hours in the real-world. If the Nvidia graphics card is in use on battery power, we are notified as shown.

When the power cable is unplugged the system takes actions to conserve power and extend battery life. The most obvious actions &8212; which are Kubuntu Focus optimizations, include:

If the Nvidia graphics card is in use on battery power, we are notified with an image

Use Nvidia Settings

Use Nvidia Settings

Nvidia SettingsStart Nvidia Settings. Click on Prime Profiles at the bottom right corner. Select the preferred GPU. Provide your password when prompted.

Preferred GPUAuthorizeSelect Leave

One should reboot immediately after switching graphics to avoid artifacts and glitches. Right-click on the desktop and select Leave... and then select reboot.

Use Command-line

Konsole TerminalThis is much faster using a GUI and completely replaces the above procedure. Reboot if you change modes to avoid glitches.

prime-select query # Shows 'nvidia' or 'intel' prime-select intel # Select Intel iGPU (power-save) prime-select nvidia # Select Nvidia dGPU (performance) sudo reboot # Do this if you have changed the mode

Troubleshooting

Q: This seems related to battery life. Where can I learn more?

A: See Battery Reset for a full discussion of battery management.

Q: Some distributions support hybrid graphics. Is this available with the Focus?

A: We do not support or recommend hybrid graphics mode. In practice this solution is more complex and usually does not significantly improve battery life. Instead we recommend you boot to the mode you need.

Revisions

This is a partial revision history. See the git repository for all entries.

Disclaimer

We try hard to provide a useful solution validated by professionals. However, we cannot anticipate every situation, and therefore cannot guarantee this procedure will work for your needs. Always backup your data and test the solution to determine the correct procedure for you.

THIS SOLUTION IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOLUTION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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