You could try sgminer then as _r2h said. It was made for linux. The config file and such is really not different at all. Main thing is that you don't have to use the "--script" argument.
google sgminer,, should find a reddit and litecointalk links which both have tons of info on running in...
I got a 280x and 270x working in my rig using the Kalroth cgminer and doing the following,
First running a very vanilla batch file:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
timeout /t 4
cgminer.exe --scrypt -o stratum+tcp://themagepool.com:3333 -u -p
Once cgminer got...