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Weird issue, no display output after Windows Loading screen?

Akagi

Akagi

Akagi

Caporegime
Joined
29 Jul 2011
Posts
37,090
Location
In acme's chair.
Hi guys,

I suspect the GPU is faulty, but just want to make sure I'm not missing anything!

I have two Sapphire R9 390 Nitro OC 8GB's in Crossfire.

With both GPU's installed, both show up in the OS and in the AMD software, both are capable of compute tasks too, the system performs roughly twice as well with two cards installed vs. one (mining, rendering, folding, etc)

When installed individually, one works perfectly, but the other only has a display output up to the Windows loading screen, then when the login splash-screen should appear, the screen goes black and the display turns off.

Put the first one in again, and its back to being fine. Cards are identical as far as I know, but is there any chance its an issue with the driver version vs the BIOS version on the card, or is it definitely faulty?

Just seems odd.

TIA. <33
 
Not sure you read my post properly or perhaps I worded it poorly. :p

One GPU, when installed alone, works absolutely fine.

The other GPU, when installed alone, only has display output up to the Windows loading screen and no further.

When the "other" GPU is installed as a secondary card along with the first, it shows up in the OS, and appears to work as expected in terms of compute power.

Both are the same exact model of GPU.

Or in case I misunderstood your angle of questioning, no I haven't seen any artifacting, and no theres no Crossfire bridge installed. They don't need one and there isn't a place to connect one.
 
I did read it ... there was some method in my madness, honest!

My 290 when it failed was corrupting the BIOS and Windows loading screens before conking out, which was a sure sign of dead-ed GPU. I could have sworn 290 still used a bridge, must have been thinking of the 7000 series. The older cards when using a bridge only used the outputs on the master card ... which was why I asked. You could run them via the PCI-E method but it was less optimal.
 
You using a display port cable display port 1.4 cable?

Not sure if this is related, but I had a similar issue on my Nvidia GPU and on DP 1.4, basically needed to do a firmware update.

Edit: ignore my post, yea I'd say RMA that card.
 
Well out of warranty. I am using DisplayPort though yes. I couldn't tell you which DP standard it is though! :)

The bad GPU still works fine in the graphical BIOS etc with no artifacting.

Ah well... Weird one! Maybe I'll try connecting it by DVI and see if that makes any difference.
 
I didn't know GPU-Z did that. I'll do that when I can be bothered to install it again haha, its back in its box thinking about what its done at the moment.
 
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