The same with my Note 9. set it 10 minutes but after a few seconds goes back to 30 seconds even if the settings are high performance.
After reading Brad's comment, I had downloaded an app for waking up display on receiving notifications called "Smartwake" and even though there was no settings in the app about screen display time out, I disabled that app and now problem is gone.
Mine is doing the same thing. Overnight it changes from 10 minutes to 30 seconds. It happens whether or not it is power-cycled. I have it set to restart itself on Tuesday nights only, but every morning the timing has changed back to 30 seconds. It began happening after the update to Pie.
Evidently not as this is still an ongoing issue. I have not seen a fix for
One UI 2.0 and Android 10 for the Galaxy S9 and S9+ Version 2.0 yet. All the screens shown in this string are different than v2.0!
Well, all the screens look different because this thread is almost a year old. They're all One UI V1.0. Most of us haven't even gotten 2.0 yet. The "Fix" for about 90% of the people with this problem has been listed several times in this thread. Give us some time to look at 2.0 when we get it and see what we can figure out.
And no, most of us here are not Samsung employees.
