When I switch from main profile to a secondary, then end the session in the secondary profile and thus get back to the main profile, the phone doesn't prompt for my fingerprint to unlock it anymore.
I know this is expected behavior when you first unlock a profile after switching, but the phone doesn't prompt for fingerprint unlock at all if I used a secondary profile before. Like, even once I unlocked the main profile and use it for hours, I just never get the option to unlock the phone with my fingerprint anymore, it only prompt for my password.

Only restarting the phone resolves the bug.

I did not have this issue before, I suspect that it was introduced by a recent update.

P.S. I use a password instead of a PIN. I don't know if it might be useful to know.

    bayerelm
    Update: just found out that "hours" was a bit of an exaggeration, it seems that the phone prompts for a fingerprint again after a few minutes.

      This has been reported by a number of users, on this forum, on Matrix, and on GitHub. It's an upstream issue that has become more prevalent since Android 13 QPR3. QPR3 was included in the recent GrapheneOS updates a week ago. Another user has gone to the trouble of opening an issue on GitHub, but it's something we'll need to wait for Google to fix, most likely.

        How can we follow the evolution of this bug since it's an upstream?
        Example if its being worked or not.

          Sad to see an upstream issue wreak this much havoc upon usability. Fingerprint unlock just needs to work for a daily driver and it may be months before we see a fix?

          I think it's time I look at switching to iOS. Privacy and reliability can be found there.

            Kryptos

            No it does not. Switching profile breaks fingerprint again. So you need to reboot after each profile switch......

              Kryptos iOS doesn't have user profiles and it can be avoided by not using that feature.

                Kryptos

                I switch profiles all the time and this doesn't happen to me, I understand how annoying that must be for you. Dunno if reinstalling GOS is an option but maybe it's something to think about.

                  What has helped me is that I have two fingerprint images left hand and right hand when I log into a second profile only the left hand works so you could probably try setting another finger print so you would have two images. that's what work for me

                    Kryptos
                    I've been just dealing with it , after some time fingerprint starts working normal not sure if its time or a certain number of logins .then auto reboot over night resets over night and the cycle starts over .

                      2 months later

                      Techsaw The issue is that the fingerprint button prompt does not even show up.

                      Are we really sure this is not an issue with GrapheneOS "End session" functionality? I have managed to get it to work again after using the "end session" button. If I recall correctly, the "end session" button showed up even after I ended the session on the only extra profilr. I tap the button and the fingerprint prompt came back again without reboot. This is quite inconsistent though, it doesn't work every time.

                        A work around for this is to open any other app within the Owner Profile that uses a biometric fingerprint.

                        For whatever reason this triggers the OS to work properly again for me anyway.

                        I have a banking app I use or even my Gallery App's Fingerprint Protected folder does the trick. This workaround has been repeatable since the issue began some time ago.

                        Give it a try, see if it's repeatable and report back.

                        -Ghostlead

                          Another workaround I've found is to go into the Fingerprint Unlock settings under Security. As soon as I enter my PIN, the functionality returns.

                            a month later

                            Any update on this? Maybe Android 14 is going to fix it?
                            As of now (9 October 23) I'm still seeing this bug virtually everytime I switch profiles.

                              • [deleted]

                              • Post #20
                              • Edited

                              Skyway Factory resetting? Pretty tall task for OS without a good backup solution. It would be great if either mods or developers chimed in on whether this this will resolve the issue for good.