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| 28 Oct 2024 |
 atemu12 | Hrmpf, so an update that changes the build number has bricked my fingerprint reader for a second time now and I have no idea why this happens or how to fix it short of wiping /data which is a PITA. Anyone have an idea why that might be and why noone else seems to experience this? | 23:13:38 |
| atemu12 | I'm gonna have to switch my daily driver away from Robotnix if I can't resolve this :/ | 23:14:15 |
| 29 Oct 2024 |
 oak 🏳️🌈♥️ | What phone do you have? | 00:28:11 |
| atemu12 | Oh sorry, should have mentioned that it's an FP4 | 00:28:27 |
| atemu12 | I cannot repro this on a cheeseburger though... | 00:28:35 |
| atemu12 | Do you have any clue what could cause this? I'm really grasping for straws here | 00:32:52 |
| oak 🏳️🌈♥️ | There are quite many things that can go wrong with fingerprint related software stack | 00:34:10 |
| oak 🏳️🌈♥️ | I just googled quickly and fairphone has had quite many issues related to Fingerprint reader even on the official ROM | 00:35:23 |
| atemu12 | Even it just stopping to work entirely? The OS acts like the hardware just isn't there anymore in my case | 00:36:15 |
| atemu12 | The settings for fingerprints have disappeared | 00:36:27 |
| atemu12 | How could I figure out where in the stack the issue is? | 00:36:47 |
| oak 🏳️🌈♥️ | https://forum.fairphone.com/t/fp4-fingerprint-sensor-not-working-and-option-missing-from-settings/94163 | 00:37:07 |
| atemu12 | I've grepped logcat when I had this issue last year and didn't see anything that smelled of a cause | 00:37:14 |
| atemu12 | Or even as much as an error reallyu | 00:37:23 |
| atemu12 | * Or even as much as an error really | 00:37:25 |
| oak 🏳️🌈♥️ | Here someone even sent the phone for repairs, they changed the board, and it still does not work x) | 00:37:56 |
| atemu12 | Huh, so I am not alone in this | 00:38:18 |
| atemu12 | Yeah this is definitely a software issue; some state getting corrupted | 00:38:31 |
| atemu12 | You can get it to work by clearing userdata and I think I had to wipe system too | 00:39:03 |
| oak 🏳️🌈♥️ | The Robotnix just probably ends up using the same stuff from vendor repository | 00:39:20 |
| atemu12 | Yup, TheMuppets | 00:39:40 |
| oak 🏳️🌈♥️ | By inspecting logcat logs, fingerprint related issues could be probably found | 00:40:18 |
| atemu12 | Though we have to infer which vendor dirs we need from device names alone, so we might accidentally be missing some | 00:40:35 |
| atemu12 | I only have vendor/fairphone/FP4 | 00:41:32 |
| oak 🏳️🌈♥️ | Below the Android Java stack there's low level Unix daemon fingerprintd | 00:41:36 |
