I hooked up a new monitor last week…my old monitor behaved just fine/as I intended. It was connected via a DVI-D cable. My new monitor is an Acer SB220Q connected via a HDMI cable (O/S is Windows 10, 64-bit, Home Edition).
My display now locks after exactly 1 minute of inactivity and blacks out after about 2 minutes. The monitor does not seem to have any adjustments/buttons that affect this behavior. Despite the relevant settings being set to what I want (“Power & Sleep”: screen = 20 minutes; sleep = 30 minutes) and double-checked in Control Panel\All Control Panel Items\Power Options\Edit Plan Settings, then rebooted, the undesired behavior continued.
I have done a bunch of interneting and followed a few troubleshooting guides that included switching drive back to the “Generic PnP Monitor” driver and changing some registry key values for “power plan” related keys…no luck, although it became clear that when I turned some of the keys on so that they displayed in the Settings panels, they were all defaulted to 1 minute, so that probably means something.
So, anyone have a similar experience? Or troubleshooting suggestion? While the only real difference between my old and new monitors is their connection (DVD-I vs. HDMI) I didn’t find any references to other registry tweaks for this?