Lots of problems w/ 11.10.  There are a couple threads on it. Even if you get it working and stable given the single nature of mining there doesn't seem to be much reason to upgrade other than to upgrade for upgrade sake.

Locate the libOpenCL.so.1 and add the path to your LD_LIBRARY_PATH.

Do a "find -name libOpenCL.so.1"

then copying the file to cgminer's directory would probably the easiest...

Change to cgminers directory then do a "cppath/to/file/libOpenCL.so.1 ." and start cgminer with ./cgminer

Thank you Pontius! Located 'libOpenCL.so.1' . But now...

./cgminer: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory

Can't located it...

However .........
To fix:

You do this:

cdlib64/
sudo ln -s libncurses.so.5 libtinfo.so.5

and your away

Aside:
yes I am now running 2.0.8 ...
I haven't used anything since a patched/hacked 2.0.2 and I always build cgminer so I don't get that error
It appears "they" renamed the library somewhere around 11.10 and I'm not exactly sure what versions ckolivas is using now
He wasn't using ubuntu/xubuntu for a while but now I'm not sure.

I kept one machine on ubuntu but I cannot keep it on the older version forever. The binaries are for Ubuntu 11.10, as the top post says.

Maybe your GPUs operate on 2D clocks?

Sorry - on the ATI side of things - I really have no idea why it would run at 1/3 the hash rate.
The fix should definitely make no difference to the hash rate of course, it is just the curses library has been renamed.

Maybe look at what it says it is doing with the GPU settings (press 'G') and see if some setting there is way off.
Of course to see those settings you need to have "export DISPLAY=:0" working properly also.
The GPU's would have to say they are all running at something like 850Mhz (or higher) to get around a total of 1500Mh/s
I think that card has 2 GPUs each.
So with 2 cards, cgminer would have to have detected 4 GPU's if that is correct?

Either way I don't really know much about the ATI driver itself (and older cards)
Someone else here may use those cards?

Edit: also you should mention which linux/version you are using and which ATI drivers you installed (the filename you got from ATI/AMD)

Yeah I'm not too sure what number of GPU's cgminer should show.
I think 4 is correct but someone else who has those cards will have to say for sure.

Unless you've found a security update in 11.10 that you think you need, there is no real need to update to 11.10

If you read the script in my sig ...
You need sudo in front of all the aticonfig commands.
(my sig now points to the latest version of the script - I created a git to store just it on it's own)

To ensure proper access to the cards you need to be sure the GUI is running and that your process has access to it.
If you are running a terminal on the screen as the same user that started x then it should be fine.
If you ssh into the machine, then ensure you ssh to the same user as the GUI and then "export DISPLAY=:0"

To check that you can see the cards:
 sudo aticonfig --lsa

Then to create the xorg.conf:
 sudo aticonfig --adapter=all --initial
I'd suggest you reboot after this (or at the least - stop and restart x)

Hello,

I'm running cgminer 2.0.8 on Windows 7 64 bit with 4 ATI 6990 cards.

cgminer is started with "cgminer.exe --intensity 9 --gpu-powertune 20 --gpu-engine 900 --gpu-memclock 800 --auto-fan --auto-gpu -v 2 -w 128 -o xxx -u xxx -p xxx"

However, can it be that "--auto-fan" is not working?

When I monitor my cards with GPU-Z, the fan speed is always 30%, it doesn't change at all...  Previously under GUI Miner, it changed automatically...

Also, when I go into GPU Management, I only get:

So I lose the output of the first 4 GPUs. Is there a way to scroll up?

Also, why do I not see the fan speed, rpm, etc?