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    Flickers daily for a bit at 9pm sharp

    Windows v4
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    • A
      a12345 @TwoCables
      last edited by a12345

      @TwoCables Thank you for your reply! I see a checkmark near "Classic f.lux" when I open Settings. So I guess I am already using a Classic f.lux.

      TwoCablesT 1 Reply Last reply Reply Quote 0
      • TwoCablesT
        TwoCables @a12345
        last edited by

        @a12345 said in Flickers daily for a bit at 9pm sharp:

        @TwoCables Thank you for your reply! I see a checkmark near "Classic f.lux" when I open Settings. So I guess I am already using a Classic f.lux.

        Argh. lol Oh well. It was just a guess anyway.

        I don't have any more guesses. I had to try though. :)

        1 Reply Last reply Reply Quote 0
        • herfH
          herf
          last edited by

          This is almost always due to a conflict with some other program conflicting with f.lux, so it's unlikely that f.lux is causing the issue by itself.

          A F 2 Replies Last reply Reply Quote 0
          • T
            ThatAdamGuy
            last edited by

            Hmm. Strange. I can't think of any other program I'd be running that would be set to do something at 9pm sharp every day.

            Any ideas how I could potentially troubleshoot?

            1 Reply Last reply Reply Quote 0
            • A
              a12345 @herf
              last edited by

              @herf It is most likely that f.lux is causing this issue because of the following facts:

              1 - we are all using different computers with a completely different set of software

              2 - this issue has started approximately the same time for all of us; it was around the time of your recent big update

              1 Reply Last reply Reply Quote 0
              • F
                flummoxed @herf
                last edited by

                @herf This started happening to me last week on the day that I did the big Windows 10 update. It occurs at 9pm, just after my eyes have gotten cozy for the evening. Always worked great previously. Please fix!

                1 Reply Last reply Reply Quote 0
                • TwoCablesT
                  TwoCables
                  last edited by

                  It sounds to me like it's the Night Light feature in Windows 10. Try to get rid of it.

                  F 1 Reply Last reply Reply Quote 1
                  • F
                    flummoxed @TwoCables
                    last edited by

                    @TwoCables Didn't even know that was a thing. Here's what the setting was reading: "Night light (off until 9:00 PM)" Switched it off, we'll see how it does. Thanks!

                    herfH 1 Reply Last reply Reply Quote 0
                    • herfH
                      herf @flummoxed
                      last edited by

                      @flummoxed the 4.59 build should turn this feature off automatically: https://justgetflux.com/flux-setup4.exe

                      F 1 Reply Last reply Reply Quote 0
                      • F
                        flummoxed @herf
                        last edited by

                        @herf Updated, thanks. (For others, turning off the Windows 10 Night Light feature did resolve the problem.)

                        1 Reply Last reply Reply Quote 1
                        • T
                          ThatAdamGuy
                          last edited by

                          Woo hoo! Thanks everyone! :)

                          1 Reply Last reply Reply Quote 0
                          • K
                            KMann
                            last edited by

                            This has been happening to me for months and I finally looked it up to see if there was a resolution.
                            Like clockwork, every night at 9:00pm on the dot, f.lux would turn off and my screen would go to full white brightness for the entire minute until 9:01pm then it would go back to normal.

                            It turns out that the Night Light option in Windows 10 was still turned on from before I downloaded f.lux months ago, and turning that feature off kept f.lux from turning off.

                            S 1 Reply Last reply Reply Quote 1
                            • S
                              stunsail @KMann
                              last edited by

                              @kmann thx for sharing...this solved the issue for me....no more 21:00 flickering :) much appricated.

                              1 Reply Last reply Reply Quote 0
                              • I
                                IonicTerror85
                                last edited by

                                sorry i'm a little late but to anyone who sees this I fixed it by closing the nvidia program in the tray

                                TwoCablesT 1 Reply Last reply Reply Quote 0
                                • TwoCablesT
                                  TwoCables @IonicTerror85
                                  last edited by TwoCables

                                  @ionicterror85 said in Flickers daily for a bit at 9pm sharp:

                                  sorry i'm a little late but to anyone who sees this I fixed it by closing the nvidia program in the tray

                                  That's the NVIDIA Control Panel. You need that.

                                  The actual fix is, disable Microsoft's Night Light feature in Windows 10. The flickering is caused by a conflict between Night Light and f.lux. Turning off Night Light is the solution. Anything else that solves it is just "a Band-Aid solution", and is therefore incorrect.

                                  J 1 Reply Last reply Reply Quote 0
                                  • C
                                    calcutzu
                                    last edited by

                                    Hello. My problem is that even after uninstalling f.lux, the night light kept flickering. What could I do to erase the f.lux modifications it did? I think it all started after installing f.lux and even after uninstalling it keeps flickering. What should I do? I dont want to use f.lux because the feature is different than the night light built in the OS i.e. f.lux gives me additional eyestrain. I have a probook 450 g7 and its visible that activating f.lux brings in additional dither which Im sensible to, in terms of eyestrain. I tested it with a high focus camera. Thanks.

                                    1 Reply Last reply Reply Quote 0
                                    • M
                                      mb1285
                                      last edited by

                                      I figured out how to do it manually within the monitor, with Custom RGB settings (please see below)

                                      I'm doing ok with two monitors, and these two settings: 2400K and 3400K

                                      For more details, please see my post titled: Flickering screen, again, with the latest version: f.lux (v4.118) . . . (08/04/20 I accidentally put this in the V3 forum)

                                      Research suggests that f.lux must talk directly to display hardware to work – no remote desktops

                                      I'm curious to see if you get good results also!


                                      2400 K #ff9d3f Standard incandescent lamps . . . HP E272q
                                      255,157,63
                                      (255,157,63)
                                      rgb(255,157,63)
                                      rgb(100%,62%,25%)


                                      3400 K #ffc184 HALOGEN . . . Per f.lux . . . HP 1755 . . . These settings work on the HP 1755, but aren't very orange on the HP E272q
                                      255,193,132
                                      (255,193,132)
                                      rgb(255,193,132)
                                      rgb(100%,76%,52%)


                                      1 Reply Last reply Reply Quote 0
                                      • J
                                        jwjustinwatkins @TwoCables
                                        last edited by

                                        @TwoCables said in Flickers daily for a bit at 9pm sharp:

                                        The actual fix is, disable Microsoft's Night Light feature in Windows 10. The flickering is caused by a conflict between Night Light and f.lux. Turning off Night Light is the solution. Anything else that solves it is just "a Band-Aid solution", and is therefore incorrect.

                                        Hey all, reviving this thread for future f.lux users. I tried TwoCable's fix and it worked perfectly. Turn off Microsoft's Night Light feature in Windows 10/11. The night light feature effectively does a similar thing to flux (reduces blue light), and it turns on at a certain time every day. This is causing Flux to flicker at X:00pm sharp.

                                        https://support.microsoft.com/en-us/windows/set-your-display-for-night-time-in-windows-18fe903a-e0a1-8326-4c68-fd23d7aaf136

                                        "Select Start, then enter settings in the search box. Select Settings > System > Display > Night light", then turn off Night light.

                                        done and done.

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