Can't change screen resolution in display setting - Huawei Mate 30 Pro Questions & Answers

I can't change my screen resolution and toggle smart resolution...
Help appreciated

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i change the screen on my q-tec and now the display is dark

[Q] How do you deal with Portrait HDMI Mirroring?

As those who have mirrored their Transformer's screen before over HDMI, you all know the bottom 80 pixels of the 1280x800 resolution screen are cut off. In landscape, this is as ideal as it gets to display 720p video and avoid the software buttons.
In portrait mode it's a different story though. You're now cutting off 80 pixels of game/app on the left side and displaying your buttons/status bar. Is there a way I can change the screens resolution (not LCD density) so applications that only run in portrait will respect the 80 missing pixels? Or make my tablet output 1280x800 so I'm not missing anything on screen?
Alternatively, is there a way to force these apps to be landscape? The majority of these apps in question actually play in Landscape, but set the screen to portrait for some reason. Thanks for any suggestions.

A question about changing the actual brightness of the screen

Hello, I would like to change the actual brightness of the screen. That is, I would like to adjust the screen back-light dimmer when the device is in the minimum brightness mode. I am now adjusting the kernel of GT-N8000 but I have no idea that which file I need to adjust. :crying:
Is anyone can help me. :crying::crying::crying:

Always on display clock change doesn't apply to the lock screen?

So, if I change the always on clock to the one that has numbers horizontally and all the same size, it works as expected on the always on display, but the lock screen stays the same. Is this a bug or is there a way to change the lock screen clock independently? Thanks!

Question Screen resolution

How do I change screen res? Option does not appear in settings/display

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