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    MacOS Catalina Bug

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    • T
      testesttest8889
      last edited by

      Flux doesn't seem to work on latest Catalina OS. After turning it on, it flashes and colors/temp looks weird.

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

        Which hardware are you using?
        Also do you have access to the Feedback Assistant (beta or developer)?

        1 Reply Last reply Reply Quote 0
        • S
          squakoon
          last edited by

          The same problem.
          MacBook Pro (15-inch, 2018)

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

            Anyone reading this: if you have Feedback Assistant, please send a report to Apple (we can't report it otherwise).

            For general troubleshooting:

            1. Try disabling automatic brightness - does it help?
            2. Try disabling automatic GPU switching if you have two GPUs
            1 Reply Last reply Reply Quote 0
            • _
              _Paul
              last edited by

              Can confirm - I have the same problem. (Macbook Pro 13 inch, 2018).

              This device does not feature a second GPU.
              Disabling automatic brightness does not fix the behavior (looks the same).

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              • T
                Tourdi @testesttest8889
                last edited by

                @testesttest8889 I confirm, Flux doesn't work correctly on my MacBook Pro 13-inch 2019 with Catalina OS. It flash and look very weird... Closing flux and everything return to normal...

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

                  Can someone also test turning off True Tone? A conflict there would make sense, since it's only on the newer models.

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                  • B
                    bnodvin
                    last edited by

                    2018 MacBook Pro 13-inch with Catalina OS and True Tone off still causes the flashing and colors/temp to look off

                    1 Reply Last reply Reply Quote 0
                    • _
                      _Paul
                      last edited by

                      Yep, True Tone is disabled.

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                      • M
                        mallardduck
                        last edited by

                        Same issue here. Flux also causes OSX to prompt to grant screen recording permissions. I suspect the latter is just due to the API it uses, but perhaps failing to grant it is what's causing the problem?

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                        • herfH
                          herf
                          last edited by

                          This should only be in the about box, which we use to estimate screen brightness. Could add a button you'd have to push if it's too alarming.

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                          • M
                            makkesebbe
                            last edited by makkesebbe

                            F.lux didn't work for me either when I installed Catalina, but when I ticked "true tone" box it started working normally again.

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

                              Anyone with "Feedback Assistant" please send a note to Apple for us?

                              Has to be done on a machine that's affected, and we haven't bought a new MBP yet. :)

                              1 Reply Last reply Reply Quote 0
                              • _
                                _Paul
                                last edited by

                                Just a small report from me - everything works now. I haven't changed anything nor updated something, yet it started to work normally again. Maybe this is only in the first few hours after upgrading?

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

                                  @_paul Okay so maybe this is a True tone conflict, it just takes some time to actually turn off?

                                  1 Reply Last reply Reply Quote 0
                                  • T
                                    testesttest8889
                                    last edited by

                                    Still experiencing same problem, turning of True Tone/Auto Brightness didn't help

                                    1 Reply Last reply Reply Quote 1
                                    • A
                                      arthurio
                                      last edited by

                                      For me it works when my external display is plugged in. As soon as I unplug it everything starts flickering and the color filter is only showing around the UI elements, on and off.

                                      As other mentioned, True tone and auto brightness don't change a thing.

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                                      • D
                                        denschub
                                        last edited by

                                        Just for the record, I highly doubt this issue is related to f.lux. As far as I can tell, f.lux is simply feeding a color profile to macOS, and there seems to be a general color profile issue going on in Catalina.

                                        I have custom monitor calibration profiles (from a calibration device), and macOS randomly ignored the profile. As far as I can tell, most of the time, macOS decides to apply the color profile correctly for everything except for pure white. #fff is always rendered as #fff, even though the color profile might tint it differently. In f.lux, this is especially harsh since everything white will glow really bright next to the red'ish colors.

                                        I have reported several issues in regards to color profiles in Catalina via the Feedback Assistant.

                                        1 Reply Last reply Reply Quote 1
                                        • S
                                          ssully
                                          last edited by

                                          Same issue on MBP 15,4. Haven't yet noticed the problem on iMac 18,3 with additional external display.

                                          For what it's worth, a system restart fixes this bug for me, at least until a subsequent sleep/wake cycle. (Merely restarting f.lux does not fix the bug, though obviously the flashing effect ceases when f.lux is disabled.)

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                                          • N
                                            NYCortex
                                            last edited by

                                            In case it helps this is happening on my macbook pro since installing Catalina. It also happens with another similar app called Iris.

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