Black screen after unlock or wake up - Huawei P40 Pro Questions & Answers

Hi there. I have Huawei P40 Pro.147 without GMS but with some apps installed from the apk files. I have got Action launcher 3 46.0.3beta (latest) for example and One Shade for Notification Centre.
Some apps like whatsapp bring back to Huawei Launcher even if Action launcher is a default one, sometimes even it breaks the setup and action launcher act ljke freshly installed (odd).
I have no idea if that is linked to my other issue or is it coincidence but sometimes when I wake up my phone I csn unlock it with face or finger ID and yet all I can see is black screen (sometimes an app but glitched like for example if I locked screen on whatsapp it shows WhatsApp but only plain background of app no data or icons)
When I long pressed power button for AI and asked for Settings it repeated that I need to unlock the phone first which is strange because I have unlocked the phone (finger ID icon disappeared and face regocnition worked too) so why the phone is acting so strangely? Is it due to launcher that I use? Or there is something else wrong with it?
Anyone had same issue or is using 3rd party launcher without any issues?
Kind Regards

It has nothing to do with the hardware. I am sure it is software issue. Hardware will not act like this with certain apps, it would be random. Here seems like all apps installed by.apk file are sometimes breaking, apps

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Love the phone. Got some issues though... Anybody knows a solution?

Hey all.
Finally got the P2P today, and so far it has been a very positive experience. I'm coming from the rather old Samsung Galaxy Note 3, so its a major upgrade in terms of screen size, resolution and raw power.
There a few annoyances though, which I really hope there is a solution for.
First, on the galaxy note the left button acts as a settings menu throughout the ui. Is there something similar here? Or at least a workaround?
Second, in full screen apps I can't simply pull down the notification bar by sliding down at the top. I have to exit the app, which is so impractical i'm thinking it must be a bug?
Hope somebody knows something i don't.. thanks in advance .
Re: the menu button in the tray, that's gone on all new Android phones. Blame Google. Menu's in the app now, upper right corner, the vertical ellipsis. Means if you have an old program without a built-in menu & the developer hasn't updated it, you're screwed. Won't be able to open menu.
And the top notification area? I just tried pulling it down in 4 different apps--worked in all. Try pulling from top/off-screen to down.
Thanks for the reply.
Guess I will have to live with the settings change like everyone else.
Much worse is the lack of notification bar. I tried with apps like chrome, gmail and 9gag that displays the bar at all times. No problem there. The problem is in fullscreen apps that hides the bar. Like the camera app, games and the AR apps. Tried your advise with placing finger outside screen, no change. The problem is both in portrait and landscape mode.
Megacore said:
Thanks for the reply.
Guess I will have to live with the settings change like everyone else.
Much worse is the lack of notification bar. I tried with apps like chrome, gmail and 9gag that displays the bar at all times. No problem there. The problem is in fullscreen apps that hides the bar. Like the camera app, games and the AR apps. Tried your advise with placing finger outside screen, no change. The problem is both in portrait and landscape mode.
Click to expand...
Click to collapse
Got the latest update? December brought mine to PB2-690Y_161202
Yes, got the latest update.
I'm gonna try a factory reset tonite to see if that helps.
Tried a factory reset, no change. Gonna write to Lenovo to see if a fix is coming.
What apps are you having the issue with being unable to pull down the notification tray? I play a few games on my P2P and they all run full screen and I am able to pull down the notification window in each of them.
I play Dominations and Boom Beach mainly. Also got the problem on the Tango apps that use full screen. Such as the Dino app, Holo e.t.c.
Odd fact: When the app runs a video, like the beginning of the dino app, the notification bar can be pulled down. But when it goes to the regular mode, I can't.
Assuming you haven't messed with anything in Developer settings or put an app on it that is screwing with the touchscreen, then you absolutely have a buggy phone. You need to return it.
This phone make calls over 4G VoLTE?
Notification pull down
Megacore said:
I play Dominations and Boom Beach mainly. Also got the problem on the Tango apps that use full screen. Such as the Dino app, Holo e.t.c.
Odd fact: When the app runs a video, like the beginning of the dino app, the notification bar can be pulled down. But when it goes to the regular mode, I can't.
Click to expand...
Click to collapse
I tried Boom Beach, Star Warss Force Arena, and Hill Climb Racing and I cannot pull the notification tray down in any of them. This is not really a problem for me. I know I could on my last phone(Nexus 6), but it doesn't bother me that I can't now.

Recents and home buttons stopped working and no notifications appear - any ideas?

Very strange one... My wife's VZW Pixel (I have one too) suddenly experience a bunch of changes that we can't find the trigger for. I just spent a hour troubleshooting every possible thing and I am stumped...hoping for some guidance.
Known facts
1. She changed nothing
2. At least one app (siwftkey) auto-updated... I uninstalled it but that didn't fix it
3. She was on the December patch when this happened. I updated to Jan but that did nothing.
4. Device is stock, unrooted with Nova launcher (I tried the pixel launcher and the same issues appear)
Symptoms:
1. Home and recents buttons do not work on any screen... Back button still works
2. No notifications appear on the NAV bar and nothing appears when you swipe down. Sound notifications do work however. No apps are blocking notifications and the individual app notifications are set up properly
3. Double press the power button no longer goes to camera even though that gesture is toggled on
Factory reset is my next step but I am traveling right now and she will need me to set everything back up so I am hoping there might be a fix short of a full reset.
And suggestions greatly appreciated.
Sent from my Pixel using Tapatalk
tfly212 said:
Very strange one... My wife's VZW Pixel (I have one too) suddenly experience a bunch of changes that we can't find the trigger for. I just spent a hour troubleshooting every possible thing and I am stumped...hoping for some guidance.
Known facts
1. She changed nothing
2. At least one app (siwftkey) auto-updated... I uninstalled it but that didn't fix it
3. She was on the December patch when this happened. I updated to Jan but that did nothing.
4. Device is stock, unrooted with Nova launcher (I tried the pixel launcher and the same issues appear)
Symptoms:
1. Home and recents buttons do not work on any screen... Back button still works
2. No notifications appear on the NAV bar and nothing appears when you swipe down. Sound notifications do work however. No apps are blocking notifications and the individual app notifications are set up properly
3. Double press the power button no longer goes to camera even though that gesture is toggled on
Factory reset is my next step but I am traveling right now and she will need me to set everything back up so I am hoping there might be a fix short of a full reset.
And suggestions greatly appreciated.
Sent from my Pixel using Tapatalk
Click to expand...
Click to collapse
Last resort, you can backup apps and data using Helium, then factory reset it. Then restore with Helium. To use Helium, you'll need a PC though.
Any other results on this?? My pixel just hit the same problem! It is in an area that has no internet so it is causing all sorts of issues. I don't know if the two are related at all.
bmadeson said:
Any other results on this?? My pixel just hit the same problem! It is in an area that has no internet so it is causing all sorts of issues. I don't know if the two are related at all.
Click to expand...
Click to collapse
Unfortunately not... Did a factory reset and that cured it. Not one issue since then. Must have been so random app she downloaded that created a conflict.
Sent from my Pixel using Tapatalk
Happens with me today. I was messing around with the device and when I clicked in a YouTube video link on notification shade the device suddenly soft reboot.
Since them, home and recentes buttons won't perform their actions. They still vibrate and home button animates on touch. Status bar shows none notification, even I knowing they are arriving via notification sound and quick settings shade won't pull down completely. My tiles was rearranged as well. No mobile connection either.
I'm running lattes official Oreo. Never unlocked and never rooted my pixel XL 128.
For me a factory reset through settings did the trick.
Would be very good if Google could light us about this issue. No rouge apps on my device. In fact I'm using a few
his is an Android issue.
Step instructions:
- Download Nova Launcher. If you cannot from the google play store, search for it on Chrome and download an apk version
- Install it (you may get a pop up advising you need to let apps installed from chrome, go to settings and allow it)
- Once installed, click on Open. This should launch the Nova Launcher
- Long press anywhere on the screen
- Choose Widgets.
- Look for the Activities widget and hold and place it anywhere on the screen.
- Scroll down to Setup Wizard. There's two, one that's "Setup Wizard" and the other "SetupWizard" without a space. Choose the first. There should be an option under it called ".SetupWizardUpgradeActivity". It might be slightly different for you pending the version OS you have but that's what came up for me.
- Select that to create the widget shortcut then click to open.
- This will bring you to the setup wizard and then just click Next all the way through (turn off any preferences you may have in the past)
You can uninstall Nova Launcher afterwards if you want. You don't need to set it as default.
Perfect!!! Thanks.

Recent apps list is invisible but there (bug?)

Dear all,
on my P20 Pro, unbranded, updated to Pie, when I try to use two apps (using half the screen), I often get in a situation where the list of Recent Apps is there but completely invisible:
- I see the button to remove any app (where you see the memory used)
- I can't see any app, but if I swipe and touch, then the app opens (like it is actually there..)
I hope I have been enough clear to explain.
At some point the list is visible again, it does not really require a reboot.
But this is extremely annoying.
Is this a known bug? Do you know how to fix this?
For what it matters, the phone is pretty new (3-4 days) so I think a factory reset will be useless at this point.
Thanks!
My bad.
I forgot to say that I am using SmartLauncher.
Once I switch back to the original Huawei Launcher, that "recent app" bug disappeared.

P20 strange rom actions

Hy
Not long ago i started noticing that my P20 started behave strangely. Before i got the android 9 update i used to have at least 2 gb ram free. After it im lucky if i have 1.5 with no apps open. Also sometimes apps are giving visual bugs like the options icons are shown on the main screen(not using app drawer or other launcher). Also sometimes when i type the google pad just disappears like i clicked outside of it. Sometimes it happens on my tablet aswell(m5 lite).
And as for a final the media volume randomly drops to a specified level even tho the volume bar is at max. Nothing else runs in the background and the phone is in my pocket.
Thanks for the answers
Edit #1: When i get a notification i used to get a floating cloud when my phone is unlocked. Now i dont get that and im missing out on a lot of information without it(no buzzing either)

Lock-screen wallpaper doesn't change anymore after tweaking

Via ADB, I uninstalled some of the bloatware (only the recommended/safe apps) from my brand new Poco X3 NFC. Now the lock-screen wallpaper stays the same, no matter which one I choose. (I already rebooted and shut down the device a couple of times, though.)
I can change the home screen wallpaper normally (using the Wallpaper icon at the bottom left, which appears after tap&hold on home screen), but if I choose to apply the change to both home&lock screens or to lock-screen only, nothing changes.
One interesting thing is that tapping on "Wallpapers" in Settings doesn't do anything anymore.
Any idea about what could have gone wrong?
Did you solve this? the problem is definitely with removing some Xiaomie app, but which one and how can we get it back?
fshuk said:
Did you solve this? the problem is definitely with removing some Xiaomie app, but which one and how can we get it back?
Click to expand...
Click to collapse
I had this a few year ago when I changed the launcher. MIUI wouldn't allow me to change the lock screen wallpaper when I used Nova Launcher
I guess it was Nova Launcher then, I think I was experimenting with it as well. But I don't have this phone anymore, though.
I too had the same situation until I reinstall the com.miui.miwallpaper package.
PS: The apk from the sites were not working for me so I got it via my friend who has a Redmi Note 10 Pro.

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