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7970 screen tearing 2D multimonitor

S

Sohaltang

Senior member
EDIT In 2d and 3D mode. Did not realize it at the time

I had this problem on my 5770 but it was more flickering than tearing. the card is plugged to my P2350G and a new Panasonic tv. I have screens duplicated. Tv is plugged into HDMI and the monitor DVI. When the TV is unhooked there is no issue. There is also no issue on the TV when both are hooked up but the monitor does. Tried newest catalyst drivers and beta drivers. OC or stock settings same result.

Anyone have this issue? RMA? Or is this just what 400$ gets you? Nvidia have this problem? Has been 5 years since I swore off Nvidia for ATI but I will change if I cant fix this..

Here is the vid. Look at the bottom 3rd of the screen.
https://www.youtube.com/watch?v=iheuYWUaPzM
watch
 
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In 2D the cards clock down. Have you done the XML hack to boost the clock speed or a fixed over clock or was it a normal over clock and hence doesn't apply? Because with 2 monitors this is normally amds terrible power saving that causes the issue.

Although we did recently find out amd can't do vsync with eyefinity resolutions, because its hardware doesn't have the fill rate to do it, but I don't think that applies here.
 
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If your card has 2x DVI connectors, try the other one. The HDMI shares a clock generator with one of the DVI connectors.This might be the issue.
 
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oddly enough, earlier tonight I noticed some tearing when (in a very rare case) using my secondary monitor for browsing AT forums. It's not the 2d clocks in my case, because the clocks are jammed at mining speed (w/ the 60 fps switch) and it's not a secondary DVI because I purposely disable x-fire to use one DVI from both of my cards (only have the one on the TF3s)

However I just had to reboot on account of Win Update and my desktop came up on my second monitor instead of where I have it usually. Now the second monitor which used to tear when scrolling down doesn't; and the main monitor, which is now secondary in windows and has lost its desktop icons and start bar has started to tear... lol

Something's up with this.
 
Swapping DVI inputs did not help. Sapphire is clueless and cant even see what I posted in the video. They did say it sounds broke send it back. Maybe I should try.

I did change "preferred monitor" from my tv to my desktop. Thought it was fixed. Nope, now it is in the exact same position but on top of the screen. Damn!
 
I honestly don't believe that this is the kind of problem that you're going to solve with an RMA.
 
Sohaltang said:
Swapping DVI inputs did not help. Sapphire is clueless and cant even see what I posted in the video. They did say it sounds broke send it back. Maybe I should try.

I did change "preferred monitor" from my tv to my desktop. Thought it was fixed. Nope, now it is in the exact same position but on top of the screen. Damn!
Click to expand...

I assume you mean DVI outputs from the card, not DVI inputs on the monitor, and simply misspoke?
 
Plimogz said:
I honestly don't believe that this is the kind of problem that you're going to solve with an RMA.
Click to expand...


I dont either. Sucks because at that price it should work right. Newegg likely wont let me return it. Going to kick myself for not buying a 680 now.
 
3DVagabond said:
Cool. We sometimes get very confused souls here. 😉

Is it just the HDMI that tears? I know that can happen with displayport if the cable isn't VESA compliant. Do you have access to other HDMI cables to try?
Click to expand...


It is just on the DVI to my monitor. The HDMI to the TV is fine. Problem goes away once the hdmi(TV) is unplugged. I can swap DVI cables no problem. I bet I got a zillion of them new in baggies.
 
I just noticed that both my monitors have some noticeable tearing along their length.

On the portrait oriented monitor it is really obvious when scrolling down a forum thread, presumably because it splits the many perpendicular horizontal lines (text and post frames), while on the landscape monitor it must get lost among the parallel scrolling vertical text.

As a test I changed the windows setting on my physically landscape monitor to portrait mode and sure enough, after tilting my head 90 degrees, the longitudinal tear runs through the scrolling text in the same bothersome fashion.
 
3DVagabond said:
Well, trying a different cable might help. If not, then I have to agree with Sapphire that the card could be defective.
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Looking like it wont hurt to try. Not much to lose. 75.5 ASIC and a pretty poor overclocker @1125/1650. Newegg told me they would refund minus the 15% restocking fee. Hate to waste 60$
 
Trying to minimize heat/power for upcoming summer. I replaced sli gtx 460 with a gtx 660 sc. Performance is excellent,(gaming) and decided to test running my Panasonic plasma with this,main setup instead of from my HTPC. It runs beautifully. I know I experimented with this in the past, and didn't like the experience to the TV while surfing/ gaming, watching youtube on monitor. All that seems righted. 🙂
I was able to eliminate 2 discrete cards and the htpc completely ! I use K-Lite codec pack and MPC for HTPC playback. MP4 is hardware accelerated, divx is not. With this software/hardware, I have no tearing.
 
Have you tried running a 3D application in a window (on either monitor) while you test for the tearing?

See if you can try that. The trick relies on the 3D application running to force the video card to use the increased clock speed for the core/memory.

I know you probably set your speeds yourself, but the problem appears to be related to 2D mode where the clocks you set will be ignored unless you have a 3D application running somewhere visible (not minimized).

After you do this test, if you confirm the problem goes away when you are running, say, a 3D game in windowed mode to let you play around with a 2D window to check for tearing, then you can apply a fix to permanently increase the 2D idle core/mem clocks just slightly more than current values. The issue is that to access the idle clock speeds and change those, you need to edit the BIOS (meaning, that simply changing clocks as shown in AFterburner or other overclocking software won't work, which is what I'm hoping you are talking about having done already so there is still hope by running this simple 3D windowed test to confirm).
 
KingFatty said:
Have you tried running a 3D application in a window (on either monitor) while you test for the tearing?

See if you can try that. The trick relies on the 3D application running to force the video card to use the increased clock speed for the core/memory.

I know you probably set your speeds yourself, but the problem appears to be related to 2D mode where the clocks you set will be ignored unless you have a 3D application running somewhere visible (not minimized).

After you do this test, if you confirm the problem goes away when you are running, say, a 3D game in windowed mode to let you play around with a 2D window to check for tearing, then you can apply a fix to permanently increase the 2D idle core/mem clocks just slightly more than current values. The issue is that to access the idle clock speeds and change those, you need to edit the BIOS (meaning, that simply changing clocks as shown in AFterburner or other overclocking software won't work, which is what I'm hoping you are talking about having done already so there is still hope by running this simple 3D windowed test to confirm).
Click to expand...


It is even doing it on Kombuster. Here is a link https://www.youtube.com/watch?v=U-wfpUZNF_4&hd=1
 
I have seen it happen in eyefinity resolutions and its because the hardware composter can't keep up with the number of pixels, but as far as I know that isn't a problem until you get up to 3 screens worth of pixels.

I saw this on my 5970 as well and it was clock speed related when there was flash on the screen. I think AMD has a hardware problem here, but no one has yet got the scoop and worked out the what and the why.
 
Well a month later. Brand new TV, RMA 7970, new install on Win8, new HDMI... SAMe result 🙁 Really bothering me. Anyone else replicate this? My last AMD card I swear
 
I recently started playing on my Lg 46 inch hdtv in big picture mode and will get the same results. Does not bother me as much im on my couch, only becomes an issue if my 2 desktop monitors are active then my tv will get screen tearing. I have 7970 reference running at 1100 1575, play games in eyeinfity with 3 23 inch monitors and get screen tearing on the right monitor. Theres nothing that can be done its amd who needs to fix this issue.
 
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