I bought a new LG thinQ, something, TV and I really dont like it. It's difficult to navigate through menus and would rather have Roku. If I plug a roku device into this TV, can it be set-up so that the Roku starts immedietely? I do not want to fiddle with the LG remote to get things started. I want to push the power button on the roku remote and things will be ready to go. Might return TV if i have to deal with 2 remotes. Thanks!
To echo @makaiguy it would probably turn on to the last input.
Many current and recent TVs (yours is from 2017) will turn on and switch to the Roku input when the Roku is awakened. I have a TV that works that way (it's not an LG, though). Hitting the HOME button or otherwise waking the Roku will turn on the TV and switch the input.
I don't know for certain your TV supports that functionality, but it is common for TVs to do just that.
DBDukes http://www.dbdukes.com/Roku Ultra (4660) Roku Streambar (9102) Roku Streaming Stick+ (3810)
Yup. Just hooked up my Roku Ultra yesterday and the Roku remote starts everything and the TV DOES goes straight to Roku. The TV's app selection does pop up at the bottom of the screen but goes away in a few seconds. So everything wprked out well.