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Extremely unresponsive when trying to unlock with pattern

After upgrading to Lineage OS 15.1, I realize that if I have screen lock set to pattern, then it is extremely hard to unlock when the screen has been off for a while. The screen will stay black while when I'm holding power button the phone will vibrate as if I'm calling power menu. This black screen can last at least one minute. I also set long press to open flashlight when screen is off and that doesn't work. Those symptoms makes me believe that the phone is awake, yet for some reason can't get GUI rendering. Sometimes even when I enter the correct pattern and the animation moves dots and timer away, I can still draw unlock pattern on the hiding unlock dots, and phone will vibrate in a very laggy manner.
Currently I'm running with no screen lock as even "swipe" still cause the unlock process to be very painful. Is this a known issue for LOS or is there a way to fix it? I saw a post says the battery should be replaced if phone is laggy. Is that a possible cause?

LolitaPlus said:
After upgrading to Lineage OS 15.1, I realize that if I have screen lock set to pattern, then it is extremely hard to unlock when the screen has been off for a while. The screen will stay black while when I'm holding power button the phone will vibrate as if I'm calling power menu. This black screen can last at least one minute. I also set long press to open flashlight when screen is off and that doesn't work. Those symptoms makes me believe that the phone is awake, yet for some reason can't get GUI rendering. Sometimes even when I enter the correct pattern and the animation moves dots and timer away, I can still draw unlock pattern on the hiding unlock dots, and phone will vibrate in a very laggy manner.
Currently I'm running with no screen lock as even "swipe" still cause the unlock process to be very painful. Is this a known issue for LOS or is there a way to fix it? I saw a post says the battery should be replaced if phone is laggy. Is that a possible cause?
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Click to collapse
This isn't a known problem.
From what did you upgrade?
Which build are you using?
Did you do a clean install?
Which gapps are you using.
Do you have Expanded Desktop enabled?

Elektroschmock said:
This isn't a known problem.
From what did you upgrade?
Which build are you using?
Did you do a clean install?
Which gapps are you using.
Do you have Expanded Desktop enabled?
Click to expand...
Click to collapse
I was using Stock Android before, but I fully wiped everything before I install.
15.1-20180508-NIGHTLY-shamu
Yes.
I got my GApps from Open GApps, but didn't remember which variant but most likely nano.
I actually have this enabled. I'm gonna disable it and see how that works.

After turning off Expanded Desktop the issue seems to be gone. Though when turned on again after some times the lag is still somewhat exist.

there's a Xposed module fix for this http://repo.xposed.info/module/fr.merams.r.deepscreenoreo

P20 Pro intermittently launches camera when fingerprint unlock used

Hello,
Has anyone else come across the following with the P20 Pro (mine is a CLT-L09 on firmware 8.1.0.131(C782) - but the issue has occurred on all firmware versions I've had to date).
Occasionally when I unlock the handset via the fingerprint sensor, the camera launches rather than the handset just going to the home screen.
Currently I have the face unlock, lift to wake and the fingerprint unlock turned on. However, I have tried turning off the face unlock and the lift to wake - but the same thing still happens.
I'd say it probably happens about once in every ten unlocks.
I don't know whether I'm accidentally pressing something which is causing it - the camera icon is in the bottom right corner, so I'm not catching that as I unlock with the fingerprint sensor.
Any ideas please?
(I moved from a P10 Plus and never had this issue with that handset).
Thanks in advance.

fingerprint reader freezes, wont register, and not responding

I bought my mi 9 2 days ago and it all worked fine. But today I've noticed that sometimes it will not register a touch, it stays as a fingerprint icon. Also, there was about 2 times it froze, like the icon froze while it was scanning, I had to unlock the phone by pin to get rid of it. Sometimes, I also notice that I have to press multiple times to get it to read, my finger is dead centre of the reader, but I still have to touch it multiple times. Anyone having the same issue or has a solution?

I also deleted and reregistered my finger multiple times. I'm on 10.2.13.0, btw.

I had this too until I added the same finger multiple times. Add the finger you are most comfortable with using as many times as you can.
When I do this it works almost every time, perhaps 19 out of 20.

10.2.13 here too.
I am able to reproduce the problem most of the times: having the phone in my pocket, I take it out and try to unlock. The reader does not respond, or it just lights and goes off cyclically as if it was retrying, yet no retry notification. If I doubletap to activate lock screen, it works like a charm.
Activating the rotation gesture to activate the unlock screen mitigates this, but other problems arise. If the phone is on the table, the only solution is to doubletap or to hit power to activate the unlock screen.
I read somewhere that it is a wakelock issue. I deoptimized the energy in the biometrics app via miappa, but the problem is still there.
Any solution?

chospo said:
10.2.13 here too.
I am able to reproduce the problem most of the times: having the phone in my pocket, I take it out and try to unlock. The reader does not respond, or it just lights and goes off cyclically as if it was retrying, yet no retry notification. If I doubletap to activate lock screen, it works like a charm.
Activating the rotation gesture to activate the unlock screen mitigates this, but other problems arise. If the phone is on the table, the only solution is to doubletap or to hit power to activate the unlock screen.
I read somewhere that it is a wakelock issue. I deoptimized the energy in the biometrics app via miappa, but the problem is still there.
Any solution?
Click to expand...
Click to collapse
Flash a custom rom. Xiaomi.eu fixes alot of problems with MIUI 10

kaydentc1 said:
Flash a custom rom. Xiaomi.eu fixes alot of problems with MIUI 10
Click to expand...
Click to collapse
What's the latest EU ROM version for the Mi 9? I'm a little bit confused on their site.

RebornCheiko said:
What's the latest EU ROM version for the Mi 9? I'm a little bit confused on their site.
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Click to collapse
Get the latest pie build. 9.8.1

Face unlock not working when screen off

Anyone else having this issue? I have to either tap phone or tap power button to get screen to turn on, then face unlock will work. Previously I would be able to just hold it up to my face with screen off and it would just unlock. After most recent update it no longer does this. Very frustrating.

Check maybe lift to wake phone is turned off in the settings.

cwburns32 said:
Anyone else having this issue? I have to either tap phone or tap power button to get screen to turn on, then face unlock will work. Previously I would be able to just hold it up to my face with screen off and it would just unlock. After most recent update it no longer does this. Very frustrating.
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Click to collapse
Mine was doing that too...along with auto brightness stuck and the proximity sensor wasn't turning the screen on and off during calls. As a last resort before sending it back (since I had to wipe it anyway) I tried the first android 11 beta (not 1.5). It almost completely fixed everything but the proximity sensor. Still had to occasionally tap the phone or power it on to face unlock though. Google replaced it because of the proximity sensor. The replacement phone is working fine on latest update of 10

redskykiter said:
Mine was doing that too...along with auto brightness stuck and the proximity sensor wasn't turning the screen on and off during calls. As a last resort before sending it back (since I had to wipe it anyway) I tried the first android 11 beta (not 1.5). It almost completely fixed everything but the proximity sensor. Still had to occasionally tap the phone or power it on to face unlock though. Google replaced it because of the proximity sensor. The replacement phone is working fine on latest update of 10
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Click to collapse
Good to know. Haven't wiped just yet, may do what you did there.

cwburns32 said:
Good to know. Haven't wiped just yet, may do what you did there.
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Click to collapse
I really didn't have ANY bugs that I found with beta 1....read 1.5 has some issues. Is your proximity sensor working? I used androsensor to confirm
edit I did wipe face data before erasing

redskykiter said:
I really didn't have ANY bugs that I found with beta 1....read 1.5 has some issues. Is your proximity sensor working? I used androsensor to confirm
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Click to collapse
My prox sensor is working fine. It just won't face unlock with screen off. Turned on lift to check phone and now screen wakes without me having to do anything but still, there was a time where I had that feature off and face unlock would unlock with screen off

cwburns32 said:
My prox sensor is working fine. It just won't face unlock with screen off. Turned on lift to check phone and now screen wakes without me having to do anything but still, there was a time where I had that feature off and face unlock would unlock with screen off
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I never had lift to wake off. That sounds like a solution to me

redskykiter said:
I never had lift to wake off. That sounds like a solution to me
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Yah maybe I am just imaging things idk hahah lift to wake works, along with various other setting so not a huge issue. Thanks

Question Fingerprint sensor unresponsive after update

I'm running MIUI 12.5.6, and since the last update the fingerprint sensor has become temperamental.
Previously, just touching my thumb to the power button would unlock the screen.
Now it will sometimes unlock, but other times I actually have to click the button.
Anyone else experiencing this?
Thanks

Try unregistering and registering from scratch.