[SOLVED?] The fingerprint scanner disappeared - Nexus 5X Q&A, Help & Troubleshooting

Solved: I've set the lockscreen security up on none (slide), locked the phone then unlocked it, and suddenly I got a strange notification that I didn't have the time to read, and finally the fingerprint scanner came back. Wtf
Hi everyone,
This morning my figerprint scanner stopped functionning. I don't know why, they said that the "fingerprint scanner support is not available" or something like that.
I rebooted my phone, and then it completely disappeared. I can't even find it in the settings, it's like there never was any fingerprint scanner on my phone.
What do you think?
Thanks
EDIT: also I don't know if there is any link but it seems like my phone case (the white at the back) has lose its colors at some points, like it's starting to turn grey, also around the fingerprint scanner

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Fingerprint Issues

I'm not 100% sure if this is a bug or a hardware issue, but my fingerprint scanner is no more.
A while after I installed one of the nightly builds for my Axon 7 Mini, my fingerprint sensor would not read my fingerprint. It would vibrate and tell me that my fingerprint was incorrect, so it's aware that I was touching it.
So, I instinctively removed my fingerprints and tried re-registering them. When I get to the point where I enter my fingerprint, it won't do anything when I place my finger - no vibrations, no error messages. You guys think my scanner is as good as dead?

[Q] Fingerprint sensor pressed without touching?!

Hi Guys,
I got a really strange and annoying issue. Since a while my it seems like the homebutton is pressed by itself. With the fingerprint recognized turned on this results in a wake up of the phone! Strangely my (correct) fingerprint is not necessary and the phone is unlocked.
I already cleaned the sensor with (medical) alcohol and restored default setting. I'm of course worried about the hardware/sensor that is broken but of course hope that you guys recognize this problem and maybe have an solution
Thanks by advanced

Ambient issue after being in pocket

I just got my Pixel yesterday and started having this issue, so I thought I'd check in with the fine folks at XDA.
I had Ambient display set to "always on" and "double-tap to check phone" set to on. After a while of being in my pocket, the screen will be black when I pull it out. Double-tap to wake does not work and it never comes on. The only way I can wake the phone after that is the fingerprint reader or power button (which I never use on my Android phones). It seems like Ambient display is going to sleep due to the proximity sensor and then just not waking up.
I changed it to lift to wake and the problem is mostly gone, but I would rather have ambient display on all the time. This is brand new out of the box. It's not rooted or anything. I haven't even unlocked the bootloader.
My OnePlus 6t was doing something similar (to a lesser degree) and it drove me crazy. This is something I need to work consistently. I expect to take my phone out of my pocket, glance at the AOD, and then tap twice to wake it and interact with the lockscreen. That's how I use all of my phones.
I just wanted to see if anyone else is having the issue. I haven't wiped it because, really, it's been doing this since I took it out of the box (new). And I have seen some other scattered reports online. Rebooting also did not resolve it.
This has happened to me a couple of times. Quite annoying.
Yeah, I have this problem too. Another bug...
Yep. Happens to me fairly frequently
It started happening to me recently too.
Thanks for the confirmation, guys. Glad I'm not crazy. This may actually be a deal-breaker for me, though. I'm pretty anal about the consistency of tap-to-wake on my devices.

Fingerprint problems, but only on MIUI roms?

Hi,
As the title says, I'm experiencing some problems related to the fingerprint sensor, specially when I try to wake the device as I have to put my finger in the sensor twice because the phone doesn't recognize my fingerprint at the first try, it just vibrates, but the second time I put my finger it wakes up the phone with no problem. It feels like the sensor puts itself in deep sleep mode as it happens like 15 seconds after I turn off the screen.
The fingerprint sensor works fine when the screen is on, as I can unlock protected apps at the first try. But some apps that include their own fingerprint authorization like Paypal or my bank account app shows me an "error" as soon as they ask me for the fingerprint, like the fingerprint sensor is already in use (not sure how to explain it), but they work as soon as I put my finger on it.
Pressing the sensor for a little longer wakes the device at the first try, but I'm pretty sure that's not the normal behaviour.
Disabling the pocket mode doesn't help either.
As the title says, this only happens on every MIUI rom Iv'e tried, like Xiaomi.eu, Mi-global or Revolution OS, always made a clean flash. I've tried Havoc-OS and Pixelexperience and the fingerprint worked flawlessly, not a single problem with those roms and that's what makes me think that it's a software related problem. In fact, I'm currently using Havoc 3.0 and the fingerprint sensor is working great.
I've also tried to flash persist.img from the chinese official rom without success. And needless to say that I've cleaned the fingerprint sensor several times.
I know it's not a big deal of a problem, but it's driving me crazy. So any help would be appreciated as I really want to use MIUI instead of any other custom rom.
TL;DR: I have to use the fingerprint sensor twice to wake my device and feels like the fingerprint sensor puts itself on deep sleep mode or that it's already in use somehow. But it only happens on MIUI roms.

Fingerprint scanner not working on AOD screen S20+

Hi, all.
I have S20+
When the screen is off, if I touch the lower half of the screen,
a) the AOD clock doesn't show up,
b) I am unable to use fingerprint scanner on AOD screen (it works fine on the unlock screen)
Oddly, while on AOD, when the touch the upper half of the screen, AOD clock shows up, but unable to use fingerprint scanner.
I have done soft reboot, factory reset, still no avail.
If someone knows how to fix this, PLEASE help.

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