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Tearing at 4K with GTX 980ti

Dash Lambda
By Dash Lambda
in Graphics Cards
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Go to solution Solved by Dash Lambda,

Just gonna put this here in case anyone else runs into a similar issue:

 

The cause was that I had hardware acceleration disabled in Firefox. Turning it on got rid of all the strange behavior.

Posted

Hello! I'm having a rather confounding issue.

 

When I run my 4K TV off my GTX 980ti, I get screen tearing everywhere --desktop, YouTube, everywhere. I've also noticed that YouTube videos are choppy-looking in the small player but smooth in fullscreen.

 

Both of those behaviors go away in 1440p and lower.

 

My desktop has a 1700X, 32GB of RAM, and two GTX 980ti's (SLI disabled, ML stuff). The TV is a Sony Bravia XBR70x850b.

 

Things I have tried:

  • Tried running the TV off my laptop
    • It worked perfectly with no tearing at 4K. My laptop is an X1 carbon G10 with the i7-1280p. I used the same cable for both my laptop and desktop.
    • Both my desktop and laptop are on Windows 10.
  • Tried many combinations of resolution and refresh rate in Windows display settings and Nvidia control panel
    • Only lowering the resolution solves the problem
  • Tried different cables and different TV-side ports
    • No dice, but given that the laptop is fine with the same cable and port this isn't surprising
  • Tried different picture modes on the TV
    • Some of them introduced other artifacts or weird stuttering, but all showed tearing
    • I'm using "original" game mode
  • Tried updating graphics drivers
    • Nada
    • I checked "clean install", though I haven't resorted to DDU yet
  • Tried taking out my secondary GPU
    • No dice
  • Tried closing background applications
    • Happens regardless

I'm at a loss. The 980ti has more grunt than the 1280p's integrated GPU so I figure it has to be a compatibility thing. Been banging my head against this on and off for a while, I figure if anyone knows what's going on they'd probably be here.

"Do as I say, not as I do."

-Because you actually care if it makes sense.

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Posted
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3 hours ago, da na said:

Tried forcing Vsync through Nvidia Control Panel? 

image.png.48f96d4b3bc8c7563e3066b957baa6aa.png

Yup, didn't change the behavior.

"Do as I say, not as I do."

-Because you actually care if it makes sense.

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  • 3 weeks later...
Posted
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  • Solution

Just gonna put this here in case anyone else runs into a similar issue:

 

The cause was that I had hardware acceleration disabled in Firefox. Turning it on got rid of all the strange behavior.

"Do as I say, not as I do."

-Because you actually care if it makes sense.

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