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Screen flickering while playing games.

Last response: in Graphics & Displays
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January 21, 2014 10:24:19 PM

Hi guys, 2 days ago i bought this new HD screen Acer V246HL 24". Everything is fine when i'm normally using my PC, watching movies / videos. But when i play a game, my screen flickers and some black horizontal distortion lines start appearing, they are very minimal in bright areas in the game, but in dark areas they are more visible. It can't be my GPU as i bought it only 3 months ago, till before 2 days i had no problems with this card i was playing games on a 19" screen with 1366x768.

As soon as i turn off the game, everything goes back to normal, i also installed a 4GB RAM, could it be cable problems?, DVI connector?.

My PC's specs:

Core i5 - 2400 CPU, 3.10 GHz
Msi Gtx 680 2GB
8 GB RAM
PSU: Gigabyte Greenmax 650W

Any ideas what the problem might be? Thank you.
a b C Monitor
a c 134 U Graphics card
January 21, 2014 10:31:56 PM

This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.
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a b C Monitor
a b U Graphics card
January 21, 2014 10:35:14 PM

Possible to get a Screen Cap?
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January 21, 2014 10:43:08 PM

VincentP said:
This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.


Hi VincentP, it's not a VSync problem, they're not the lines like someone is slashing the game when you move around, i tried turning VSync on and off and the lines are still there. It seems most likely a power/cable issue?.
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January 21, 2014 10:43:52 PM

simmons33 said:
Possible to get a Screen Cap?



Right now i'm not at my home PC, later on i will try posting a screen cap.
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a b C Monitor
a c 134 U Graphics card
January 21, 2014 10:49:13 PM

ibrahimasghar said:
VincentP said:
This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.


Hi VincentP, it's not a VSync problem, they're not the lines like someone is slashing the game when you move around, i tried turning VSync on and off and the lines are still there. It seems most likely a power/cable issue?.


Are you using a VGA or the analog part of a DVI cable? Analog signals can be affected by interference.
Digital signals (DVI-D or HDMI) should not experience the same problems.
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January 21, 2014 10:58:02 PM

VincentP said:
ibrahimasghar said:
VincentP said:
This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.


Hi VincentP, it's not a VSync problem, they're not the lines like someone is slashing the game when you move around, i tried turning VSync on and off and the lines are still there. It seems most likely a power/cable issue?.




Are you using a VGA or the analog part of a DVI cable? Analog signals can be affected by interference.
Digital signals (DVI-D or HDMI) should not experience the same problems.


Yes, interference is the right word for this i guess, i'm using a VGA cable that came with the screen, and using a VGA to DVI connector/converter to plug into my GPU. Do i have to get a purely DVI cable?, guide me a little on this.
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January 21, 2014 10:59:00 PM

bouncedk said:
If you are using a VGA cable (and that's included with this monitor) it will most likely flicker. It sounds exactly like the issue I was having not long ago. Switch to DVI-D and the problem should be fixed completely.


You mean i should get a DVI cable?
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Best solution

a b C Monitor
a c 134 U Graphics card
January 21, 2014 11:07:27 PM

ibrahimasghar said:
VincentP said:
ibrahimasghar said:
VincentP said:
This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.


Hi VincentP, it's not a VSync problem, they're not the lines like someone is slashing the game when you move around, i tried turning VSync on and off and the lines are still there. It seems most likely a power/cable issue?.




Are you using a VGA or the analog part of a DVI cable? Analog signals can be affected by interference.
Digital signals (DVI-D or HDMI) should not experience the same problems.


Yes, interference is the right word for this i guess, i'm using a VGA cable that came with the screen, and using a VGA to DVI connector/converter to plug into my GPU. Do i have to get a purely DVI cable?, guide me a little on this.


The DVI-I connector on your graphics card will look like the top plug in the post above from bouncedk.
The four pins on the right of this image actually carry an analog signal. This is how DVI to VGA adapters or DVI to VGA cables work.
The three rows of pins on the left carry a digital signal.

The DVI connector on your monitor expects a digital signal.
Use a standard DVI to DVI cable connected to the DVI connector of your graphics card and to the DVI connector of the monitor.
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January 21, 2014 11:22:42 PM

bouncedk said:
Yep DVI-D to DVI-D.



Thanks, i will try this. DVI-D to DVI-D

Dude, i bought the DVI-D to DVI-D cable, the flickering is gone! Awesome, thanks a lot!
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January 21, 2014 11:23:44 PM

VincentP said:
ibrahimasghar said:
VincentP said:
ibrahimasghar said:
VincentP said:
This sounds like screen tearing, where the graphics card is rendering frames faster than they can be displayed.
Some games cope better than others, do you notice a difference in different games?
Enable vsync in the game, this should resolve the issue.


Hi VincentP, it's not a VSync problem, they're not the lines like someone is slashing the game when you move around, i tried turning VSync on and off and the lines are still there. It seems most likely a power/cable issue?.




Are you using a VGA or the analog part of a DVI cable? Analog signals can be affected by interference.
Digital signals (DVI-D or HDMI) should not experience the same problems.


Yes, interference is the right word for this i guess, i'm using a VGA cable that came with the screen, and using a VGA to DVI connector/converter to plug into my GPU. Do i have to get a purely DVI cable?, guide me a little on this.


The DVI-I connector on your graphics card will look like the top plug in the post above from bouncedk.
The four pins on the right of this image actually carry an analog signal. This is how DVI to VGA adapters or DVI to VGA cables work.
The three rows of pins on the left carry a digital signal.

The DVI connector on your monitor expects a digital signal.
Use a standard DVI to DVI cable connected to the DVI connector of your graphics card and to the DVI connector of the monitor.


Thanks VincentP, i will do this later today and get back to you, i am hopeful that this is going to fix the interference. Thanks again.

Dude i got the DVI cable and connected directly from my monitor to GPU through DVI-D, the flickering is gone! Thanks for your help man!
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