Windows 10: How to find out what wakes up my monitor?

I set my monitor to turn off after 15 minutes, and never sleep. Sometimes the monitor will automatically turn on, although nobody have touched the keyboard or mouse.Is there any way to know what caused the monitor to turn on?

:)

 

Monitor will not wake from sleep

When my PC wakes from sleep it always used to wake the monitor as well but now when the PC wakes the monitor does not respond. The only way to solve the problem is to do a hard reset of the PC. The PC is definitely waking from sleep. it is just the monitor.

I have read multiple forums trying to find a solution but nothing seems to work. things I have tried:

• updating BIOS
  
• restoring Windows
  
• running Windows Update
  
• trying a different monitor
  
• checking monitor settings
  
• turning off Fast Startup
  
• Running Troubleshooter Power
  
• turning off Link State Power Management
  
• Restarting in Safe Mode
  
• Updating and Rolling Back the display adaptor
  
• checking that keyboard and mouse can wake the PC
  
• probably a few more that I have forgotten
  

Asus PN51

Windows 11Home 64 bit

AMD Ryzen 7 5700u

AMD Radeon Graphics

Any suggestions gratefully received

 

Dual monitors not waking from sleep

Hi all,

I'm having issues where my monitors won't wake from sleep in a dual monitor setup. This only occurs after waking them from a sleep state, and they work fine when booting up my PC from scratch.

I have tested both monitors in a single monitor setup and the issue goes away completely as they wake from sleep just fine when only using a single monitor. This issue only seems to occur when using both monitors simultaneously.

I have tried the below steps to no avail to remedy the issue:

• Changed the DisplayPort cable
  
• Uninstalled graphics drivers with DDU and reinstalled them again
  
• Made sure Windows update was completely up-to-date, including any optional drivers
  
• Made sure there were no unknown devices in Device Manager
  
• Turned Link State Power Management under PCI Express in Power Plan settings to off
  
• Completely formatted my PC and reinstalled Windows 11
  

None of these steps have resolved the issue.

Any assistance provided will be much appreciated!

 

Monitor problem - not waking up

Hey guys, I have an issue with my BenQ GW2765HT where if I turn on my computer with the monitor in standby (orange light) status the monitor will not wake up. I must then unplug the monitor from the AC power and then replug it and then also restart my computer before the monitor will wake up. This issue is intermittent however and also strangely if I do a restart from Windows the monitor goes to standby for a second or two before waking back up when the POST screen appears which is normal behaviour. So it seems only if the screen is on standby for some time does it fail to wake up again.

Also the monitor will not wake up if it is powered off (although still plugged in) under the same circumstances as if it were just on standby status and also requires the AC power to be disconnected and the computer to be restarted before it wakes up.

Any suggestions? Or should I just take it back to my shop?

info; I bought it in the middle of August last year.
edit; I am using a displayport cable. I've tried a different displayport cable and also with a different computer and I have the same problem. I also tried DVI and it happened more often.