Second monitor doesn't wake up after I turn on my laptop

[hzama]

Hi

I have a 42" dell monitor connected to my hp omen 15. When I turn off my laptop and turn it back on the monitor doesn't wake up. Although when I go into display settings it shows that I have two monitors connected. 

However when I turn on my laptop the monitor just shows a "scanning for signal" sign and the sign disappears after a few seconds but it doesn't actually wake up.

The only way I can get it to work is to disconnect the hdmi cable and connect it back on. 

I tested the monitor with another laptop also connected with hdmi, and it works fine. (i.e the monitor goes into power save mode after turning off the laptop and it comes back after I turn my laptop on)

How can I get my  omen laptop to wake up my monitor? Thanks.

[Riddle_Decipher]

@hzama I suggest you make a few changes to the way sleep mode works under power options:

• Change - "Put the computer to sleep" to preferred time,
• And Change - "Turn off the monitor" to never.

If the issue persists, try the below steps:

Disabling the hybrid sleep, followed by updating all available Windows updates and the BIOS update from the HP website, please follow the below steps to disable the hybrid sleep after performing a hard reset on the device should help resolve the issue.

1. In Windows, search for and open Control panel.

2. Make sure the View by setting is set to Category, and then click Hardware and Sound.

3. Click Power Options.

4. Click Change plan settings for the power plan that is selected.

   

5. Click Change advanced power settings.

   

6. Expand Sleep, and then expand Allow hybrid sleep.

7. Select Off from the On battery drop-down menu, and then select Off from the Plugged in drop-down menu.

   
    

8. Click OK.

FOR DETAILS & FURTHER INSTRUCTIONS, USE THIS LINK: CLICK HERE & FOLLOW THE STEPS UNDER - The computer does not wake up from sleep or hibernate mode.

(By the end of this article all the issues should be resolved)

P.S: Welcome to HP Community 😉

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.

[hzama]

Thanks for your suggestion. I did all the above but the issue is still persisting. 

I had all my drivers updated to no avail.

Just to reiterate my issue, the laptop itself wakes up from sleep, it's the second screen that doesn't. 

Windows is showing two monitors attached when I go into the display settings but the screen is off until I disconnect and reconnect the hdmi cable.