Redshift Blue Light Filter

Reduce eyestrain

Reduce eyestrain and maintain better sleep rhythms using the Redshift blue light filter.

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

Option 1: Enable in System Tray

The Redshift control is found in the system tray for all user accounts created on the Focus since March 2020.

Option 2: Add a Plasma Widget

This option is not needed if you already have a system tray control for Redshift.

2.1 Unlock widgets

18.04. Right-click on the panel and select Unlock Widgets.

20.04. This step is not needed or available.

18.04 Unlock widgets

2.2 Add Widget to panel

18.04 and 20.04. Right click and select Add Widgets…

Add widget to panel

Search for Redshift in the Widget panel (shown here at left).

Search for Redshift

Double-click on the widget to add to the panel. A (1) will appear in the panel to indicate success.

Add Redshift

2.3. Reposition the widget

The widget as appended to the end of the panel — in this case, at the bottom right corner.

Add widget to panel

Right click on the panel and select Panel Setting…

Reposition widget

Grab and drag the widget to the desired location.

Configure Redshift

2.4 Configure Redshift

Right click on the widget to configure.

Configure Redshift

Geohints generally works well.

Configure Redshift

2.5 Toggle Redshift

Click on the widget to toggle Redshift on and off.

Toggle Redshift

Right-click on the desktop to Lock widgets again.

Troubleshooting

Content will be added as needed.

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.

KFocus Logo