CGminer - No devices found

[Serellyn]

Hey guys,

So I've got this new mining rig, 2 x r9 280x cards. These are meant to mine some alt cryptocurrencies.
Anyway, fresh Windows 7 install. Installed the latest catalyst control center (13.12).

But when starting CGminer it gives me the following error:
clDevicesnum returned error: no gpus usable

Does anyone know why this is?
Using CGminer 3.7.2 with the following config file

{
"pools" : [
   {
      "url" : "http://doge.poolerino.com:3333",
      "user" : "nikitanl.Alexis",
      "pass" : "x"
   }
]
,
"intensity" : "13,13",
"vectors" : "1,1",
"worksize" : "256,256",
"kernel" : "scrypt,scrypt",
"lookup-gap" : "0,0",
"thread-concurrency" : "8191,8191",
"shaders" : "2048,2048",
"gpu-engine" : "1125-1125,1125-1125",
"gpu-fan" : "30-70,30-70",
"auto-fan" : true,
"gpu-memclock" : "1750,1750",
"gpu-memdiff" : "0,0",
"gpu-powertune" : "-20,-20",
"gpu-vddc" : "0.000",
"temp-overheat" : "85",
"temp-target" : "72",
"api-port" : "4028",
"expiry" : "60",
"gpu-dyninterval" : "7",
"gpu-platform" : "1",
"gpu-threads" : "2",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"load-balance" : true,
"kernel-path" : "/usr/local/bin"
}

I have tried other versions of CGminer too, that does not seem to be the case.

[Jcw188]

I've had this problem in the past too.  I had to fool around with the catalyst control center versions and cgminer versions as well.  Do you have the SDK App?  I think it might come with that catalyst control center version though, so I'm not sure.  If there was something I was going to fool around with it'd be the AMD drivers.

[Serellyn]

I've had this problem in the past too.  I had to fool around with the catalyst control center versions and cgminer versions as well.  Do you have the SDK App?  I think it might come with that catalyst control center version though, so I'm not sure.  If there was something I was going to fool around with it'd be the AMD drivers.

I was actually just posting a reply, but noticed you replied to.
I actually managed to solve the problem by altering the config file, and disable/enable one of the cards.
I'm now just using single values in the config file.

Hope this thread helps future miners a bit Check your config file boys!