Motherboard designed for mining, and better riser cables in this thread.

[xdotcommer]

Did it ever work?

Yea it worked a few times... there are more details here
http://www.reddit.com/r/litecoinmining/comments/1xpir6/ubuntu_and_xorg_at_100_and_cgminer_n_hangs_6_cards/



Also when I try "xhost +" it hangs

[RickJamesBTC]

If it always boots with one card on a riser plugged in, try every card in that config to rule out  a problem with the hardware.
Then try each pci-e slot out.

Sorry, I don't have time to read a reddit thread (does anyone?)

[xdotcommer]

If it always boots with one card on a riser plugged in, try every card in that config to rule out  a problem with the hardware.
Then try each pci-e slot out.

Sorry, I don't have time to read a reddit thread (does anyone?)

Yea Makes sense(about reddit) so here is TLDR

I did try to swap places/ rizers/ etc ...
It seems there are other people on linux experiencing identical problems on the usb powered rizers.
Strange is on other motheboards when I run 3-4 cards everything is fine and I only experience a similar problem if a rizer is not well connected to the board or card or the cards pcie are not well connected.

This is the xorg.conf
http://pastebin.com/SGe2mLy9

Xorg Log http://pastebin.com/Bv0dPUGX

[pontiacg5]

Try these drivers over top of a fresh 13.10 install. Just drop all three cards in and go from the start.

http://www.techspot.com/drivers/driver/file/information/17508/

Install these first, before building the driver...

sudo apt-get install dh-make dh-modaliases execstack libc6-i386 lib32gcc1

Set execute permission, build it, and install it.

After...

sudo aticonfig --adapter=all --initial --force
sudo reboot

On reboot, you should be good to go.

[xdotcommer]

Are you sure the issue is the driver when I can run with one card just fine?

I am trying this right now anyway.  But I did try Beta 13.1  9.94 Beta, Beta 14.1 and 13.2 with Identical results which made me believe it was not a driver issue.

 

[pontiacg5]

There was a time when I had all 6 cards detecting, but only one would hash. Cgminer would give me an ADL mismatch. Different drivers fixed the problem.

[xdotcommer]

Problem is I cant even start CGMINER because XORG is hanging.


Just tried the amd-catalyst-13.11-betav9.95-linux-x86.x86_64 and again no luck

Same problem (XORG @ 100%) no login screen / cgminer -n hangs
 1096 root      20   0 81052 8388 6436 R  100  0.4   2:09.39 Xorg     

[xdotcommer]

So I randomly I just got 5 cards to work by taking a rizer out of the 16x slot.

Then it all stopped working again. With the 16x slot or without.

I can consistently get three cards to work and when they don't i just have to reseat the riser on the motherboard. However when i add the fourth card even if it was tested as working xorg goes back to 100%

Leads me to believe rizers are very touchy and need to get better seated/attached.

[rascal777]

With those longer riser cables, 30cm... I had so much problem, but then i wrapped alumimum around the cable and placed plastic wrap over the aluminum, and some of my problems went away.

[InCoinsITrust]

With those longer riser cables, 30cm... I had so much problem, but then i wrapped alumimum around the cable and placed plastic wrap over the aluminum, and some of my problems went away.

Really, aluminium? What problems went away ?

[johncarpe64]

I am happy to have the 30cm cables. Its so much better then the normal riser..

[xdotcommer]

Updated BOARD BIOS... swapped a bad rizer got 5 cards working.
6 Card wont work even with swapped rizers.

SECOND identical board (h81 btc)
updated bios
Tried to add 2 cards... either one works fine... but both wont work.

USB 3 Powered Risers.


Problems continue

[Originality]

If I decide to use my GA-Z87X-UD4H mobo with the additional power through a SATA power connector with 2x 7950s

If I wanted to add 2 more 7950s or 4x 7850s, would I need powered risers?

Also, I currently run the 2x 7950s on an Seasonic X850. How many watts would I need if I added 2x 7950s or 4x 7850s?

[nvandertill]

There was a time when I had all 6 cards detecting, but only one would hash. Cgminer would give me an ADL mismatch. Different drivers fixed the problem.

ADL mismatch is a bug in cgminer 3.7.2 for the R9 290(x). New sgminer 4.0.0 has bugfixes to fix it!

[ManeBjorn]

Anyone have a good link to powered USB risers for GPU's?
The link here shows an ended auction. 
Also if it is a US or Canadian seller it would be great.
Thanks

[chMiner]

Anyone have a good link to powered USB risers for GPU's?
The link here shows an ended auction. 
Also if it is a US or Canadian seller it would be great.
Thanks

Yes here:
http://www.ebay.com/itm/Powered-PCI-Express-PCI-E-1x-to-16x-Riser-Flex-USB-Extender-Sata-not-Molex-1foot-/171237263210?pt=LH_DefaultDomain_0&hash=item27de89476a

[ManeBjorn]

Thank you.  Just what I was looking for.
I appreciate it.

Anyone have a good link to powered USB risers for GPU's?
The link here shows an ended auction. 
Also if it is a US or Canadian seller it would be great.
Thanks

Yes here:
http://www.ebay.com/itm/Powered-PCI-Express-PCI-E-1x-to-16x-Riser-Flex-USB-Extender-Sata-not-Molex-1foot-/171237263210?pt=LH_DefaultDomain_0&hash=item27de89476a

[RickJamesBTC]

What the heck, don't link to those overpriced ones!! Go to my website, only $20 each!

[RickJamesBTC]

Or even on ebay, mine are the cheapest ones in the USA !! 
 
I even have a bitcoin payment site, www.magicgrowing.com and www.bitcoingrowing.com

[ManeBjorn]

I went to your site when I saw it in another post on here.
I hope to order a couple of the 40" ones the end of next week.
Thanks for having reasonable prices I really appreciate.  I don't have much money so I have to stretch what I do have.

What the heck, don't link to those overpriced ones!! Go to my website, only $20 each!