My 27" FT45 monitor (LF27T450FQNXGO) goes into sleep mode and wakes up when it's supposed to. But while in sleep mode it will repeatedly turn on for a few seconds and back off. Continuously and regularly maybe every 10 seconds. What's on the screen is just what it was when it went to sleep; nothing changes there.
What's turning it back on? I've been turning the power off to make it stop at night or it will do this all night.
That's extraordinary tenacity! I've learned to live with it but I know I'm not the only one having this problem. And I'm sure you're not the only one getting no reply from corporate.
I believe I am also running into this exact issue with my Odyssey G9 LC49G95TSSNX7A with my onboard Intel UHD Graphics 770 graphics card. I do not seem to have an issue with any other monitor. It is extremally annoying because the computer detects the monitor as attaching and detaching every 10 seconds or so making the hardware connect/disconnect sound and the monitor flashes on and off. I am very interested in seeing what the resolution to this will be and would love to help with the troubleshooting if possible.
I've had this same problem for for over two years and I've never found a solution either. I've just resigned myself to turn it off manually every night. I've also had the same monitor connected to my laptop and it stays off when it goes to sleep with no problems. I've always suspected that it is related to power options, however, I've tried all of those suggestions and none of them have worked for me either.
I also started turning the monitor off every night. But I have two monitors on my desktop and every time I turn one off the desktop is all sent over to the monitor that's still on. Then in the morning I have to move all the windows I had on the Samsung back to it and set everything up again (I normally have a lot of windows open, which is why I need two monitors). If I turn both monitors off then all the windows come up on the first one turned back on.
So I've resigned myself to leaving both monitors on. The computer is in my office so it's not noticeable in the bedroom but it's still annoying to see the glow going on and off in there. I'm concerned it's not good for the longevity of the monitor as well.
It's really interesting that the same monitor works right on your laptop. I haven't tried that but maybe I will. The power options are usually set differently on laptops but if you've compared them then maybe there's something more going on with the latop.
I have the same issue with my Samsung Monitor (LS34J550WQNXZA). I'm also running a dual monitor set up. Hopefully a solution is still being worked on.
It seems more people are finding this thread hoping to find a solution. user_ams007 has been great about trying to get some help from Samsung but hasn't been successful yet. No updates in a while, though. I'm still hoping a solution presents itself eventually.