Topic Title: HDMI corruption
Topic Summary: Possible hdmi handshake problem
Created On: 10/06/2013 10:50 AM
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 10/06/2013 10:50 AM
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Posts: 2
Joined: 10/06/2013

For some time now I have had some trouble with my Sapphire AMD 7850 2gb OC.

I have two monitors/ screens. One is a samsung p2470h the other is my tv. The LG pk350 (connection runs through a onkyo 718 amp.

On recent drivers my samsung screen has become unusable. I have uploaded a photo:

Strangely catalyst 13.2 is working fine. When I installed the driver I had the same corruption. Manually forcing the pixel format to YCbCr 4:2:2 results in a clear picture. Any other settings automatic or manual are a no-go. This is obviously not normal. In newer drivers this doesn't fix the problem anymore.

The corruption is visible while displaying desktop, games or movies. On 13.2 with pixel settings something like crysis 3 is no problem

I have tested the following:

catalyst 13.2, 13.3, 13.10v2. Just 13.2 works with pixel format setting.

I have switched the cables between my tv and monitor and hooked up everything directly. No matter what setting or connection. The tv always gives a clear picture. The monitor does not.

However if I hook the monitor up to another device, like my laptop it works fine. This has led me to believe there is a hdmi handshake problem between the 7870 and the monitor.

Allso the information segmend in the OSD of the monitor suggests that the input recieved is 2400x1080 when the corruption is present. Even though in CC everything is set to 1920x1080. When the picture is normal the input is received correctly as 1920x1080. Howeven lowering the resolution does not result in a clear picture.

Do you have any suggestions?



Asus p8p67 pro
Sapphire 7850 2gb OC
Crucial m4 265gb
520W power supply
Monitor: Samsung syncmaster P2470h
Other testing equiptment:
    3 HDMI cables 1.4a spec. 1m 2m and 5m.
    HP laptop with intel HD graphics card

Edited: 10/06/2013 at 11:07 AM by dekaasboer
 10/07/2013 01:18 PM
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There doesnt seem to be much input about this problem.


I will update to 13.9 whql and test that one. If it doesn't work there i'll fill in a support ticket.

*Edit, still the same problem

Edited: 10/07/2013 at 01:57 PM by dekaasboer
 10/07/2013 05:28 PM
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Ninja Zombie Killer

Posts: 4905
Joined: 12/27/2008

Have you tried DVI? You say it's a monitor, so it should support it.


CPU: AMD Phenom II X4 810 @ 3120MHz | RAM: Kingmax 2x2GB DDR2 800 @ 833MHz| MoBo: MSI K9A2 CF v1.0 (BIOS: 1.D)| GPU: Asus HD 6850 1024MB (DirectCu) @ 835/1135MHz | Display: L24FHD | PSU: PC Power & Cooling Silencer 750 Quad | OS: MS Windows 3.11 Pro x64

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