Emulator for Android. How to set 50Hz on a smartphone?

[McArti0]

Does anyone know Android well? It's about forcing 50Hz on the Screen when the menu only shows 60Hz.

[Gryzor]

Depends on manufacturer and Android version.

This used to work some time ago (no idea when I entered it into my notes), I don't know if it's working anymore:

adb shell settings put system peak_refresh_rate xx.x
adb shell settings put system min_refresh_rate xx.x

[McArti0]

Motorola G22 Android 12

Need console and root?

[Gryzor]

Should work with A12, but never worked with Motorola phones so don't take my word for it.

I don't think it needs root, just a PC, adb, dev options on and USB debugging on.

If for some reason it refuses to allow you to do it, you can do a "pm grant" (I'm on the phone right now, can't really hunt for the syntax and options, sorry, and haven't done that in ages since I'm always rooted)

I guess you can also do it with the SetEdit management tool, too.

[McArti0]

Thx working but only 60/90 i can set.

[Gryzor]

What's the output?

[McArti0]

Main screen.
CPCEMU 2.5 flikers well but only at 60Hz  CRTC R4=31

[Gryzor]

No I mean how do you know about the 60/90 thing.

[McArti0]

I have option in menu "show refresh rate"

[Gryzor]

Not that it matters much, but are you sure it reads the refresh rate accurately? And why are there two values (60/90)? Apologies, I don't quite understand what you're doing. 

By the way, there's an option in Dev Options to show the refresh rate on-screen.

[McArti0]

I use SetEdit and when I set min_refresh_rate and  peak_refresh_rate to 50 phone is going to auto set live 60/90.

[McArti0]

https://source.android.com/docs/core/graphics/multiple-refresh-rate#config-groups

[Gryzor]

48 eh? Hmmmm

[McArti0]

Motorola stiffens the hardware setup.

[Gryzor]

Yeah that's why I mentioned manufacturers at the beginning...

[McArti0]

If anyone wants to test their phone. Set 50Hz, install CPCEMU 2.5 and the code: 

SPEED INK 1,1
INK 0,4,9

And see if you can see the blinking dark gray nicely.