When the device screen is off, it can only use LAN, ping anything else will fail

[yingshaoxo]

For example, when screen off, ping bing.com will fail.

But I have root permission in both android and linux, why this will ever happen.

Can we solve this problem?

[yingshaoxo]

My android version is 9

But I also found this issue in android 13

[yingshaoxo]

I temporarily solved this problem by using fakestandby apk:

https://github.com/JonasBernard/FakeStandby/releases/tag/v1.4.0

It will turn off the screen by using a black picture as background, so the screen will never be really turned off, and the network will always on.

[extraric]

#disable power savings from adb or terminal:
dumpsys deviceidle disable