Dear friend you can either use Ethos or Pimp.Which are quiete different from each other for functions but very similar coding.Both of them are linux based systems.So, what I advise you is just purchase one of them and boot your rig using the flash dirves.By the way Ubuntu is also a fork actually (Debien).
The trouble shhoting flow chart is prepared by Hasflux.Here is the link:
http://forum.ethereum.org/discussion/7457/anyone-using-asrock-h81-pro-btc/p2[INITIAL LINUX TROUBLESHOOTING STEPS]
First let's see if the kernel even sees the hardware. Use the following two commands. Note I add comments with # symbol but they are not intended to be typed in the terminal.
1. Ssh into the machine or if your running it non headless open a new terminal.(all of my rigs run headless and have no x windows running but with linux amd cards you do have to run a basic x server if you desire to kill your cards life span by playing around with over clocking and undervolting. Truthfully your better off using a custom bios on your card for this anyway and not run a memory hard x server.)
2. # We need to update the pciids to the latest list so the commands we use will recognize all of the cards properly. Run the following command...
sudo update-pciids
3. # Now let's see what VGA devices the system is detecting as connected without relying on the drivers
lspci | grep VGA
# there you will see a nice list of all VGA devices. If you see all six then that elemenates the motherboard and linux as the problem. If thar command only shows 5 then try disconnecting all cards and move the card one by one through your pci slots to find the offending pci slot. If it detects each slot fine try it with the next card and continue until you find either the bad pci slot or the bad gpu and proceed to do an RMA with your vendor.
[Driver Trouble Shooting Steps]
Assuming everything passed our pre trouble shooting steps we have elemenated most possible hardware problems but one more may show up as we troubleshoot our 6 GPU issue. Now we need to check the drivers.
1. Run the following command.
clinfo
# Does the command show all your devices from the opencl drivers perspective or is the driver failing to see them all. NOTE: if the clinfo hangs for a long time and does not return anything then one of your cards is bad and you will have to try the command one by one disconnecting individual GPU and proceed to do an RMA once you find the offending hardware.
2. Assuming you do have the AMD Proprietary drivers installed and clinfo worked ok the next step is to make sure the devices were initialized properly by the driver. Use the following command.
sudo aticonfig --initial --adapter=all -f
sudo shutdown -r now
Once the system comes back up open a terminal and a final check on the configuration with the following command
sudo aticonfig --list-adapters
All your adapters should be showing up now and that pesky sixth gpu is ready to mine with or its in the mail at this point for an RMA
now move the usb riser to first X1-pcie slot and boot.. Shutdown once you get the screen