I got problems getting CGminer to work at all, it shuts down directly.
I've tried several different versions of cgminer 3.1.0 and 3.0.0
Different flags have also been tried with no success, program just shuts down directly all the time.
I tried running just one of the cards with the "-d 0" flag but it didnt work.

here is a version of what I have tried in my .bat file

cgminer  --verbose -o http://stratum.d7.lt:3333 -u [myworkername] -p [mypass] -d 0 -g 1 2>logfile.txt

The output to the logfile is

[2013-05-07 15:25:02] Started cgminer 3.0.0
 [2013-05-07 15:25:02] CL Platform 0 vendor: Advanced Micro Devices, Inc.
 [2013-05-07 15:25:02] CL Platform 0 name: AMD Accelerated Parallel Processing
 [2013-05-07 15:25:02] CL Platform 0 version: OpenCL 1.2 AMD-APP (1124.2)
 [2013-05-07 15:25:02] Platform 0 devices: 2
 [2013-05-07 15:25:02]    0   Cypress
 [2013-05-07 15:25:02]    1   Cypress
 [2013-05-07 15:25:03] GPU 0 ATI Radeon HD 5800 Series hardware monitoring enabled
 [2013-05-07 15:25:03] GPU 1 ATI Radeon HD 5800 Series hardware monitoring enabled
 [2013-05-07 15:25:03] Probing for an alive pool
 [2013-05-07 15:25:03] Testing pool http://stratum.d7.lt:3333
 [2013-05-07 15:25:03] HTTP request failed: Empty reply from server
 [2013-05-07 15:25:03] HTTP request failed: Empty reply from server
 [2013-05-07 15:25:03] JSON-RPC decode failed: (unknown reason)
 [2013-05-07 15:25:03] Stratum authorisation success for pool 0
 [2013-05-07 15:25:03] Pool 0 http://stratum.d7.lt:3333 alive
 [2013-05-07 15:25:04] Init GPU thread 0 GPU 0 virtual GPU 0
 [2013-05-07 15:25:04] CL Platform vendor: Advanced Micro Devices, Inc.
 [2013-05-07 15:25:04] CL Platform name: AMD Accelerated Parallel Processing
 [2013-05-07 15:25:04] CL Platform version: OpenCL 1.2 AMD-APP (1124.2)
 [2013-05-07 15:25:04] List of devices:
 [2013-05-07 15:25:04]    0   Cypress
 [2013-05-07 15:25:04]    1   Cypress
 [2013-05-07 15:25:04] Selected 0: Cypress
 [2013-05-07 15:25:04] Selecting phatk kernel

I had the latest drivers (13.4) for the gpus 5850s from the start, so i uninstalled them and wiped the system clean(with AMDs uninstall utility), reinstalled a older version (13.1, I think, can't remember if it was 12. that seemed to work for others but no luck for me.

Now after failing in basicly every turn i take i went back to the latest drivers so atleast can mine at slow pace with Bitminter-client which works now.

However i'd really like to get CGminer to work so i can start tweak the settings and get more out of these cards.

I appreciate any advice, thank you!


I had nvidia cards prior but all drivers and programs associated with nvidia has been uninstalled.

TLDR

• Tried different drivers
• Tried different versions of CGminer
• Can mine with the Bitminter client, it works
• Tried different versions of CGminer
• Rig consists of two HD5850s
• Powersupply is a Corsair AX850
• Googling has not yielded any results and my troubleshooting is at a standstill, need your help!

Edit: The solution was to uninstall current drivers. Delete certains files (read msg #3 for which ones) and then reinstall 12.8.

Hi,
I'm using a HD5850 card to mine. I usually mine in pools but wanted to try out solomining just for fun (ie. I know it's a waste of resources). I pretty much followed this guide - http://sonothing.weebly.com/1/post/2013/03/solo-bitcoin-mining-with-bitcoin-qt-and-guiminer.html

The issue I'm having is that my hashrate solo mining is around 150 khash/s when I usually am able to squeeze out at least 270 Mhash/s otherwise. So I tried CGminer and that one worked just fine solomining meaning I got around 270 Mhash/s.

However I prefer OpenCL over CGminer since it has the nice throttling capability with the -s flag.What have I missed? I assume my setup is alright since the issue only pertains to OpenCL.

Any help is appreciated!

Edit: Clarification I'm mining BTC, which is why the 150 khash/s feels way low on a GPU.