Huawei P10 still WIFI Disconnects after 2 Minutes turning screen off. Checked the logs and found this issue reported 3 years ago:
If I turn off the screen, the wifi connection will be disconnected after a few minutes. Not sure if always, but almost every time This is present in 2020-04-18 and 2020-01-21 Builds. I have SM-G925...
Activate adb debugging as root in dev options and start adb as root on your pc:
$ abd root
$ adb shell
$ echo 1 > /proc/sys/net/ipv6/conf/wlan0/disable_ipv6
Then WIFI stays connected after you turn the screen off.
The workaround i mentioned is just temporary. It works till you reconnect to the WiFi or reboot. Disabling Ipv6 on your router makes it work but then some services might not work for you which rely on IPv6.
Since its TrebleDroid based i tried to install the TrebleDroid Android 13 GSI. In the TrebleDroid GSI the bug is also present. Its not a specific LineageOS problem.