Rx 580 always runs @2x instead of 16x

[Nabarun]

Asus Rx 580 Dual 4GB on a Asus ROG M6 Hero. Fitted on the first 16x slot and everything on UEFI and OS has been properly configured, with no power savings on the PCI-e. At idle GPU-Z shows bus interface 16x gen 3 running at 2x v 1.1. On load that does change to gen 3..0 but the 2x doesn't change. See the screenshots - one @ idle and the other @ load.

 

[Aquinus]

If you have a M.2 card installed and you put the GPU in the bottom most slot, that might happen. The 2x@3.0 feels like half of 4 lanes being shared with an M.2 device because running on only two lanes is very unusual outside of that situation. Other than that, I would do the typical, reseat the CPU and reset the BIOS kind of things and see if it continues happening but, the 2x sounds odd.

 

[Nabarun]

There is no M.2 facility in the motherboard. And I already said I have it instaled in the fiirst 16x gen 3 slot. Nothing else is using any pci-e slot. Reseat the "cpu"? Or do you mean GPU? Because have already tried other sllllots and reset BIOS many times.

 

[DR4G00N]

Have you tried older drivers? Sometimes the newest drivers can cause issues like this. Either that or your card is defective. Do you have another system to try it in?

 

[Nabarun]

No, the other systems have been down for years. I did some googling and seems like the pci-e slot needs to be cleaned and the CPU re-installed. There is a possibility that the cpu may be slightly dislodged or some pins bent. There WAS an incident, where one of my cats jumped over the pc chassis and the pc hanged. I keep the side panel open during gaming otherwise the storage devices get uncomfortably hot (>45C). In the mean time feel free to offer other options, because I'm gonna need new TIM etc for the reinstall.

 

[IceScreamer]

I'd clean the GPU contacts first, and the slot. I had the same issue with my 750Ti.

 

[newtekie1]

Try just reseating the gpu, and make sure it is all the way in the slot.

 

[Nabarun]

Try just reseating the gpu, and make sure it is all the way in the slot.

I did that in 2 slots. Although without the cleaning bit. Is spirit of ether good for this or should I have to get Isopropyl alcohol?

 

[rtwjunkie]

Have you tried older drivers? Sometimes the newest drivers can cause issues like this. Either that or your card is defective. Do you have another system to try it in?

This is exactly what I have encountered at times with my 480 and newer drivers, I have had success every time going back to an older driver and then x16 showing up.

 

[newtekie1]

I did that in 2 slots. Although without the cleaning bit. Is spirit of ether good for this or should I have to get Isopropyl alcohol?

Pencil eraser.

 

[Nabarun]

Pencil eraser.

Well, the eraser may be ok for the contacts in the gpu, but the slots need a different approach.

 

[eidairaman1]

Well, the eraser may be ok for the contacts in the gpu, but the slots need a different approach.

Contact cleaner spray and an aerosol duster

 

[Nabarun]

@eidairaman1 What spray? Please give some examples. As for the duster, I could only find air dusters which require a separate compressor etc, and these. Do I need a separate spray if I use the Foooit?

 

[Ferrum Master]

@eidairaman1 What spray? Please give some examples. A

Here.

Inspect PCIE coupling capacitors on the card.

 

[Pehla]

i had the same issue with my hd 6950,i turn out i somehow damage one of the tranzistor(resostor) just above gpu conectors...take a good camera and make a macro photo at both sides of gpu and close inspect if all is ok.
I had my replaced at one elecrtician guy for few euro...

 

[W1zzard]

Inspect PCIE coupling capacitors on the card.

+1 on that

 

[Nabarun]

Here.

Inspect PCIE coupling capacitors on the card.

+1 on that

That kontakt cleaner doesn't reveal what chemical it contains - only "special solvents", and it's not available here. All I can find are isopropyl alcohols like this. Anyway, if I do get this spray, do I still have to use the air duster?

Also, can you share a picture of the caps I should be looking for?

 

[Ferrum Master]

Also, can you share a picture of the caps I should be looking for?

It won't disclose its mix as it is patented, this particular solvent is officially approved by the manufacturers in the repair process and is non corrosive and non conductive. I cannot vouch for any other "alternatives" as you don't know if it held in aluminum barrels before or how they are filtered, thus containing metal ions and if they soak in the board you can expect many random outcomes, that's why yo CANNOT use simple alcohol for cleaning electronics, it may go haywire. If you wish to risk, then you may use anything. The connection uses 4GHz signals, the material properties are a different game there.

Usually it ain't dirt or dust... but the mechanical damage.

The capacitors look and are arranged like that for any PCIE device as per PCI-SIG design recommendation. Here is an image with a missing part.

 

[Nabarun]

Is that C156 missing? And what is that triangle thingy to the left? Is that supposed to be like that?


P.S.
The PC randomly hung a while ago, and I then removed the card and took the pics, and connected it to the second PCI-e sot. It's supposed to be x16 gen 3 iif only 1 card is used, and x8 if 2 are used in sli or crossfire. After postiing the above images, I just thought of taking a look at the GPU-z and I saw that it was at x8 gen 1.1. On load it became x8 gen 3.....

 

[jaggerwild]

Look in the PCI-e slot if its not full of pins, its a X4 slot, try removing the GPU use an eraser to clean of the PCI-E contacts. Reinstall.

 

[Nabarun]

@W1zzard can you please get an Asus guy to confirm if this really is a case of missing caps ?

 

[eidairaman1]

@W1zzard can you please get an Asus guy to confirm if this really is a case of missing caps ?

Circle the items supposedly missing for the rest of us here to see

 

[Nabarun]

Circle the items supposedly missing for the rest of us here to see

Man I promise it's not the whisky. But I thought it's quite apparent from the first pic. "C156" ring any bell?

 

[kn00tcn]

1) unclear if you recently got the card
2) why are we so sure that the mobo isnt the problem, try on another mobo? (why does it have to be your own, you dont live on an island by yourself)
3) why are we so sure that the reading is correct? performance numbers are the only number that prove anything
4) i doubt C156 is missing, check the opposite side of the board, ferrum's pic shows a damaged cap which looks different
5) what are those darkened areas below C101, above C102, left of C103?

 

[fullinfusion]

I'm not a rocket scientist but do know soldering and that definitely looks like a broken weld with a transistor/cap is missing. Normally if nothing goes there the pad wouldn't have anything there like soldier. I remember back in the day I changed thermal master on a 3870x2 or whatever it was, dual gpu single card and I lost one. I did find it and never found where it come off.. but once the card was hooked back up I did loose fan control :/

Edit I'm just looking at the picture that's circled to post my comment

Edit #2 I was looking @Ferrum Master picture.. sorry.. the other pix of buddies card I have to go with @kn00tcn and look on the other side of the card.

@Nabarun your having an issue I had a few years ago and have a thread somewhere in here but gawd if I can find it.. turned out I had to re-flash the mobo bios or reset it, it's been to long ago to recall correctly but one of the two fixed it.