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Quote from: Kritix on July 12, 2017, 07:10:32 PM

Hey there, im quite new into mining- I recently started to mine on my gaming PC just for fun and then i decided to build a rig...
So i got all the parts and six rx 560 (as i could not get any better cards due to global shortage)... and that is when my nightmare started.

I run the rig on win10. system detects all the cards with no problem... well after few but i managed that

but once i start claymore, im done for.
If i got only 4 cards plugged in, everything works fine, but as soon as i plug in 5th or 5th and 6th card, claymore is suddenly able to detect just 2 of them.

I have spent better part of last two days trying to find some solution, but i got nothing. Tried countless drivers, restarted the rig a million times, even tried other miners despite the fact that i like claymore the most...
nothing

If anyone got any idea what could help, please let me know.

do you have virtual memory page file set to 16gb?

Yes, without that, not ecen windows was able to detect cards properly... i suspect crossfire has something to do with this issue, as if i connect more cards, only those two in full slots are working

yes crossfire needs to be disabled double check that for all cards in radeon settings

Do you have some tip on how to do that? All guides i found were showing option to diable crossfire under Gaming > Global settings > Crossfire....
Yet i do not have this option at my radeon settings, i have tried multiple versions of drivers, currently i am running 17.4.4 but i have not seen that option in any version i tried.
Is there some other way to turn of crossfire for good?

Ok, so i tried bunch of other stuff to find a way to disable crossfire - nothing worked... then i realized, GPU-z should show status of crossfire and it turns out, i have it disabled on both cards in PCIEX16 (i have unplugged the other cards for now)

So, if crossfire is disabled, why claymore still detects only cards in PCIEX16 and not cards in PCIEX1 slots?

Still if i plug in 4 cards (1 PCIEX16 and 3 PCIEX1) it all works fine...

Id be grateful for any tips.... for now ill just set up 4gpu rig and go to sleep, i am exhausted and got to work tomorrow :/

Have you checked device manager? Does it show all 6 cards? If not then you have to enable 4G Decoding on the Bios. That should show the 2 extra cards, correct and without any warning in device manager. After that, drivers should re-install themselfs and after a final restart (remember to patch the drivers if you have messed with VBIOS) you should be ok.