Need help configuring cgminer on xubuntu 12.04

[manav1112]

Hey,

I installed all the drivers, xubuntu, etc.

I created a mining .sh which goes as follow:

Code:

#!/bin/sh
export DISPLAY=:0
export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1
cd /home/miningpc1/cgminer-2.7.5-x86_64-built 
./cgminer --scrypt -o stratum+tcp://pool.d2.cc:3335 -u Manav1112.1 -p x

I am using a PowerColor 7950 and Sapphire R9 280x Dual-x
I have a few questions:
1. I want to get cgminer running, when I use byobu to run the mining.sh it launches cgminer but I get an error.
Screenshot of error: (on left the script to run the code and on right the cgminer)


Once that is fixed, I want to get optimal settings for both the cards. and how should I go about running the two cards? Should I have two instances of cgminer running?

But first I need help with getting this cgminer to just run...

If people could help I will be thankful 

[subhead]

why you use such an old version of cgminer? try 3.7.2 if you want to mine scrypt coins.

[manav1112]

Ok, trying that now...