Very nice job for the explanation! So if the the contract expires you automatically get your BC back in case designer did not complete and did not cancel?

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

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.

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     

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.

 

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

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

When XORG hangs I can still SSH into the box but I followed your steps for re initializing the card and no luck.

Xorg still at 100% and cgmine -n hangs.

http://imgur.com/TfuF3zy

Having issues with Asrock H81 BTC and 6 280x Tri-X Saphire  USB 3 Powered Rizers on Linux  (Debian, Ubuntu 12.04, Ubuntu 13.10, Ubuntu 14.04)
ADL SDK 2.9/2.8 and Catalyst 13.2 and 14.1

The issue is consistant on all boards Xorg hangs @100% at startup without seeing login screen(usually black screen). This causes "cgminer -n" to hang at startup.

If all cards but 1 or 2 cards are removed the boot is fine and I can mine no problem.

Detailed investigation on reddit where many other people are having the same issues.
http://www.reddit.com/r/litecoinmining/comments/1xpir6/ubuntu_and_xorg_at_100_and_cgminer_n_hangs_6_cards/