My ambient mode setting is not working. It display a empty screen only.
Can you confirm which device you're having trouble with? Is this a Chromecast and TV, a smart display, or some other device? Let me know what you're using and we can jump into troubleshooting steps.
We just want to check if you have seen our response posted above. Let us know if you have additional questions, otherwise we'll be locking the thread.
Due to inactivity, I'll go ahead and lock this thread in 24 hours. Feel free to start a new thread if you need assistance with your Google speakers and we'd be glad to assist you further.
Google Nest Help Center
Chromecast Help Center