I thought it was fixed (after one recent update I suddenly got fingerprint working whenever I switched profiles, but after another update (or just a reboot?) it stopped working again 100% of times.
Could you please post a link to the issue in the issue tracker? May be worth posting some comments there to get some attention to the issue (or trying to fix it ourselves)?
(I mean a link to AOSP issue tracker, not GrapheneOS one)
bayerelm
I had the same problem and because my three apps, which actually require Google Play services, now run quite well without Google Play services, I had deleted the user profile I had created for this purpose.
I have just created a "Google profile" for testing purposes and saved a fingerprint.
Now everything works as expected!
After the first change, there was a brief problem as described by one of you (fingerprint symbol only appears very briefly, then GOS wants the password again).
But since then, the lock symbol changes to the fingerprint symbol after two seconds at the latest every time the profile is changed and logging in then really works.
However, I have now only stored one fingerprint in the second profile.
There was (is?) the other problem that the second/each additional profile cannot remember more than one fingerprint.
I will test whether this problem has been solved later.
Eagle_Owl
Addendum:
I added a second fingerprint to the second profile and then switched between the profiles a few times.
Conclusion: Works great, only takes about 1-2 seconds for the lock symbol to change to the fingerprint symbol and then you can put your finger on it and you're logged in.
That's how it should be! :-)
Tested with my Pixel 7 Pro, newest GOS version 2024032100
Oooh, thanks for the hint as this has been bugging me like crazy!
It's definitely an improvement getting the fingerprint working again when switching from owner to new profile. But not the other way around and also not all the time. It's like the phone is going through a process of thinking and showing the print, then it just stops and locks up URGH
Eagle_Owl
Addendum:
Especially for you, I have now tested again and saved two more fingerprints in the owner profile only.
Result: The problem is back!
I then deleted the additional two fingerprints and tested them again.
Result: Everything works!
Conclusion: there must be the same number of fingerprints stored under all profiles or at most two per profile will work.
But I'm not going to test this any further. If one of you has already saved the same number and/or the same fingers per profile anyway and it doesn't work, we already have the answer: then only two fingers per profile are currently possible.
Ohhhhh snap. I had five fingerprints in the main and five in the second profile. I deleted three in both profiles so left with two (math...)
Still early, but it seems to be allowing the fingerprint unlocks now when switching...
Holy crap, if this works...you freaking legend
You are the king!
My phone had limits for max 4 per finger and I used up all slots for both profiles.
I deleted all and added
3 in main + 1 in second
That didnt work.
I did 2 in main + 1 in second and it worked! This is the first time it starts to work for over 9 months!!
I added 3 again i main, and it stopped working.
So seems there is some sort of limitations here or bug when adding more than 2 prints per finger.
Also I want to add when switched profile first time back to main it asked for my pw, but after that all attempts worked with fingerprint only.
For a split second it shows lock symbol if you let it run the fingerprint sensor will show up. If not for whatever bugged reason just turn screen off and on (i have power button to instant lock phone enabled) and it does show up.
I will report back again here in a day or two with my verdict :)
BIG THANK YOU!
Eagle_Owl Huge thanks for figuring it out. This should help the team reproduce it and see if something can be done. I was one of the people affected due to having 5 fingers added in Owner, which I've now reduced to 2. It works fine!
After 5 hours of constant switch back and forth I can tell it still works fine with having just 2+1 prints added (should work same as 2+2 also). Also tested some reboots meanwhile.
The only bad side-effect of being limited to 2 fingers per profile is due to the bad fingerprint reader of Pixel 7 (which has nothing to do with GOS), I used to add multiple configuration for same finger to have a 100% success rate unlocking the phone.
With the limitation of just 2 fingers added (1x thumb and 1x index) I am now having difficulty of reader to scan my finger as my thumb now requires 2-3 attempts to unlock it. But I am still happy :) To have this resolved was the biggest inconvenience with gos ever.
You should update the GOS bugtracker and maybe this can be fixed finally. All creds to @Eagle_Owl for the time you spent and finding a workable solution.
Another thing I noticed now regarding this issue is that if you have too many incorrect attempts on one of the profiles with the fingerprint, then the fingerprint also gets disabled in the other profile (change profile through lockscreen) and it asks for pw there too. Once pw is is entered the fingerprint starts to work again.
So somehow it seems some information regarding fingerprint configuration/settings or something else is shared among profiles hence the limit and workaround regarding the 2+2 fingers.
If this helps any DEV.
Unfortunately, this workaround only works partially for me. I have stored one fingerprint/profile (no more than four in total). If I switch back and forth between several active profiles, it works well.
But if I exit a user profile via "end session" and switch to the owner profile (which is actively running in the background), the fingerprint icon only flashes briefly, but then disappears again and I have to enter the password again each time.
Has anyone tried 5 prints in all profiles to see of that works too ?
Murcielago
What happens if you inside main profile start an app that can be configurated to use fingerprint to access app. For example bitwarden.
Does everything start to work again?
Eagle_Owl
I tried two profiles with 5 prints and couldn't use finger print when switching profiles . went down to two prints and it works as it should . this is crazy .
Should repot google , maybe a bounty ?
I added more prints when my finger got disfigured must of been around that time it stopped working correctly .
It was a pleasure for me to help finding the reason for this bug.
I am very happy, that we all now have a workaround until Google or the GOS team will find a solution for the use of all fingers for all profiles.
Murcielago
Yes, I know, it works only if you don't end sessions of additional profiles.
Oh, no, wait, this was long time ago, when I have used two profiles until the issue began…
Have it tested right now, because you mentioned it and I was very curious if this issue is solved also…
And it works for me here on my Pixel 7 Pro!
I have selected my second profile and because it's a new session, I had to key in my password.
Then I have ended this session to go back to owner profile.
Here the fingerprint reader shoes me instantly the fingerprint symbol, not the lock symbol.
And now it works the first time I log in. :-)
Maybe you have to repeat the steps once more, until the device stores it all the right way?
Good luck!
