Samsung LF24T450F 24" monitor keeps waking up every few seconds when my Win PC has slept its displays.

[Wizardling]

As described in this old locked thread https://us.community.samsung.com/t5/Monitors-and-Memory/Monitor-won-t-stay-off-in-sleep-mode/m-p/262... my issue has not gone away, and Samsung support never got back to me after I approached them.

My Samsung LF24T450F 24" monitor keeps waking up and sleeping again in a never-ending cycle (it turns the screen on, finds no input of course - since the PC has slept displays, and turns the screen off again, rinse, wash, repeat), only when my Windows 11 PC sleeps its displays, but not the entire system. When the PC is entirely slept or powered off, this issue goes away.

This issue does not occur with my LG 29UM69G-B 29" monitor connected to the very same PC, nor did the issue occur with the old Viewsonic 24" I replaced with this new Samsung LF24T450F 24". So it is not the PC or Windows at fault. It is this Samsung monitor.

[Wizardling]

Except as I said, my LG monitor I use as primary is connected to the very same PC and is unaffected, and the Viewsonic monitor I used as secondary prior to this Samsung, was also totally unaffected.

[Wizardling]

Dumber how? 🙂 The LG wakes with my PC, sleeps when it sleeps, and never needs me to touch the power button.