Blue Light Filter

Blue Light Filter

Soothe your eyes

Soothe your eyes and maintain better sleep rhythms using Night Color (20.04) or Redshift (18.04) blue light filter.

Please read the disclaimer before proceeding. This solution is updated regularly. If you have suggestions or requests, please write support@kfocus.org.

20.04: Use Night Color

1. Right-click on the chevron at the bottom of the system tray.

Right-click to Configure

2. Configure the system tray to always show the Night Color Control icon.

Right-click to Configure

3. Right-click on the system tray icon to configure Night Color.

Right-click on Icon

4. Change the time and magnitude of the effect as desired.

Configure Night Color

5. Hover over the icon to see status.

Hover for Status

18.04: Use Redshift System Tray

All 18.04 users created after March 2020 should see the Redshift icon in the system tray. Left- and right- click on the icon to use Redshift. See the video for more details.

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.

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