Graphic Glitching

Howling

Howling

Howling

Soldato
Joined
14 Sep 2008
Posts
2,814
Location
Peterborough

Been getting that since I bought the XR34 2 weeks ago, so naturally I assumed the monitor was faulty - normal assumption right? So I RMA'd it, got sent it back because it tested ok. So I got it back, the issue was still there and I hadn't had any problems on my Samsung U28D590D so I was convinced it was the monitor - until it happened on the Samsung on Sunday evening :/
At which point, I ruled out monitor as being the issue and moved on to suspecting one of my GPUs to be at fault. So I disabled Crossfire - got the issue still, removed the card and tried on the other card, got the issue. So now I'm at an impasse, I don't know what else to test... It "could" be the Motherboard, no? I don't think a CPU or RAM issue would cause this fault (without other faults being present), which would then leave PSU. So it's the Mobo or PSU - but how do I test either? :/

Important to note: The issue doesn't immediately appear, it can go several (up to 8-ish) hours without any issues sometimes. It only happens in games/fullscreen video and I've yet to see it on general desktop use. On the Samsung I don't so much get the graphical distortions, just the screen blackouts.

Help me =(
 
I was getting them kind of flashes on my 7870 when it started to die. Tried down clocking the cards?

Also, might sound silly but have you tried different display cables? Over HDMI, Display port etc?

Or maybe it's a sign not to play Black Ops 3 ;)
 
I've had similar symptoms with a duff HDMI cable, although it looked a bit more "snowy".

I've also had something a bit like that with a faulty 7850 with bad memory. If you didn't underclock the memory massively the screen would glitch out like in the video, only it would stay black for a lot longer and after a few times the video driver would crash.
 
I also had very similar symptoms a while back, and it turned out to be a dodgy cable. Changed the cable and never had a problem again.
 
As it affects both cards, but only fullscreen and after periods of time - this sounds to me like a cooling/temp related issue.

This does not, however, mean its the card's temp. Its worth checking how your PSU and Mobo temps are reading out, too.

Here's what I would do:

1) Obviously check drivers, different cables, and update your BIOS
2) Check your power supply is up to the task
3) Run a game until it glitches, then, whilst its running, use a program to underclock the card. Resume playing. Iteratively reduce the clock speeds (I suspect this will 'fix' the problem) whilst playing.
4) Get temps readings for everything, especially the GPU.

If 3) fixes it, and the temps are within limits, and its on BOTH cards, I can only suspect a power/mobo issue - two faulty cards is unlikely (unless you got them both at the same time, from the same retailer - it could be a bad batch).

In which case, see if you can find anyone with a PC you can hook your GPUs into and try it in a different mobo/PSU configuration. It'll establish whether its the cards or another piece of kit.

That's a ball ache, sure, but I'm not sure how else to troubleshoot beyond that.
 
Thanks for posts guys, I'll try **** out and see what it gets me.

Further information; PSU is a Superflower Leadex Gold 1300w. Temperatures of CPU never breach 63 and GPUs never breach 52 (rarely goes above 45 tbh). Mobo and PSU temps are unknown, any way to get readings for those?
I'm going to be picking up yet another DP cable later along with a PSU tester to try and eliminate those things from my pool of suspects. Honestly, it's a dick of a fault to try and diagnose - I'm not lovin' it. :(
 
The GPUs are at stock since they barely overclock anyway without voltage, and I've tried both my stock and OC profiles on CPU (stock test was even by accident, didn't realise it hadn't loaded the OC lol)
 
It better not get expensive, all my parts are new within the last 3 months - the oldest parts are my Furys which I got... whenever they came in stock? End of August? I think.. Plenty of warranty to claim on if need be, just a case of figuring out which part is the issue :/
 
Specs are in Sig. Pair of Fury X.

I'm not sure if it's fixed, I've not had it since last Sunday, but I did a lot of fiddling around along with putting the second card back in, wiggling the cables and making sure everything was in tight everywhere. I've seen maybe 2 "flickers" in 30+ hours of Fallout so I'm not sure if I fixed it or if it's still there - lurking in the shadows ready to strike D:
 
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