Question Mirrored Display - Monitor + TV issue ?

revodo

Proper
Jun 10, 2021
197
25
120
2
I'm generally not useless when it comes to troubleshooting, but this issue has had me stuck for over a year.

I have a custom built desktop with a 2070, that has an HDMI and DisplayPort output. I use the TV as a second monitor, mainly for mirroring or playing videos. Something similar to this setup:



The monitor is 1080p 75Hz, and is connected with HDMI to HDMI.
The TV is a Samsung smart TV 1080p 60Hz and is connected with DisplayPort (Computer) to HDMI (TV).



Here is my issue. If both displays are turned on, no issue. However, when I turn the TV off, my computer will randomly play the hardware disconnect / reconnect sound, and cause a 1 - 3 second lag / freeze on Windows, regardless if I'm using a desktop program, or playing a game. The intervals of when this happens are not consistent. Sometimes it happens 3 times in a minute, other times it happens once every 10 - 20 minutes. Unplugging the DisplayPort to HDMI cable resolves this issue.

I have done fresh reinstallation of Windows multiple times since this problem has persisted. I have used different drivers. I have tried changing every display setting I can think of. I have switched cables.

Any suggestions or tips would be greatly appreciated.
 

Ralston18

Titan
Moderator
Even with the TV "off" there is likely some communication going on between computer and TV. That communication stops when, as you mentioned, the video cable is unplugged.

Which display is Primary?

I would expect the monitor (make and model ?) as primary vs SamsungTV. No harm in verifying.

Either way, does the problem continue if you switch screen number assignment?

Another thought:

Before turning the TV off use "WIN" + "P" to return to "PC screen only" or perhaps "Second screen only" as applicable to the monitor.

That may make a difference.
 

revodo

Proper
Jun 10, 2021
197
25
120
2
Even with the TV "off" there is likely some communication going on between computer and TV. That communication stops when, as you mentioned, the video cable is unplugged.

Which display is Primary?

I would expect the monitor (make and model ?) as primary vs SamsungTV. No harm in verifying.

Either way, does the problem continue if you switch screen number assignment?

Another thought:

Before turning the TV off use "WIN" + "P" to return to "PC screen only" or perhaps "Second screen only" as applicable to the monitor.

That may make a difference.
Appreciate the reply. I have tried switching both screens as primary and secondary. I have also tried setting the projection status as "PC screen only" before turning the TV off. This has been the most perplexing issue I've ever come across.
 

Ralston18

Titan
Moderator
Which model Samsung TV?

Likewise for monitor?

Take a closer look at devices and configuration:

https://winbuzzer.com/2020/08/21/how-to-check-what-graphics-card-you-have-on-windows-10-xcxwbt/

Determine if all is as expected.

Try using Powershell to delve deeper into the display/monitors.

For example try the following cmdlet (as mentioned in the above link):

Get-WmiObject win32_videocontroller

Reference:

https://devblogs.microsoft.com/scripting/use-powershell-to-discover-multi-monitor-information/

The objective being to determine what the host laptop/Windows is "seeing" with respect to the displays in question.

Then you can take a closer look to see if all specs and settings are as you know and/or expect.
 

revodo

Proper
Jun 10, 2021
197
25
120
2
Which model Samsung TV?

Likewise for monitor?

Take a closer look at devices and configuration:

https://winbuzzer.com/2020/08/21/how-to-check-what-graphics-card-you-have-on-windows-10-xcxwbt/

Determine if all is as expected.

Try using Powershell to delve deeper into the display/monitors.

For example try the following cmdlet (as mentioned in the above link):

Get-WmiObject win32_videocontroller

Reference:

https://devblogs.microsoft.com/scripting/use-powershell-to-discover-multi-monitor-information/

The objective being to determine what the host laptop/Windows is "seeing" with respect to the displays in question.

Then you can take a closer look to see if all specs and settings are as you know and/or expect.
Will do as soon as I get home from work toady. Thanks.
 

revodo

Proper
Jun 10, 2021
197
25
120
2
Which model Samsung TV?

Likewise for monitor?

Take a closer look at devices and configuration:

https://winbuzzer.com/2020/08/21/how-to-check-what-graphics-card-you-have-on-windows-10-xcxwbt/

Determine if all is as expected.

Try using Powershell to delve deeper into the display/monitors.

For example try the following cmdlet (as mentioned in the above link):

Get-WmiObject win32_videocontroller

Reference:

https://devblogs.microsoft.com/scripting/use-powershell-to-discover-multi-monitor-information/

The objective being to determine what the host laptop/Windows is "seeing" with respect to the displays in question.

Then you can take a closer look to see if all specs and settings are as you know and/or expect.
Everything appears as it should on that front. I think at this point I'm just going to have to get my hands on another TV and see if the issue persists.
 

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