Nvidia GTX430/ ATI 6670 mixed mining, getting hashes but no shares.

[BecomingPhill]

Hi all,

I'm using Guiminer to mine with 6670 while running desktop from GTX430 on a Windows 7 PC with an ASUS P5WDG board. There's no monitor connected to the 6670 and Guiminer picks it up fine as Turks. I googled around and found the problem might either be that Windows disables cards not connected to monitors but I cannot find the registry entry for that.

I also read about SDK problem's but that seems less likely. The console on guiminer keeps reporting:

2013-08-01 11:41:27: Listener for "B___e": pit.deepbit.net:8332 01/08/2013 11:41:27, Verification failed, check hardware!
2013-08-01 11:41:34: Listener for "M____li": pit.deepbit.net:8332 01/08/2013 11:41:34, Verification failed, check hardware!

Can anyone help me?

Thanks in advance.

[GrapeApe]

I'm mining with on Windows my two 5850's and didn't ever thought about need to use the dummy plugs, it isn't needed!
You just need to disable ULPS - this mechanism disables the second card without monitor/workload. Here's how to do it:

Go to registry and disable Ulps:

 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

 and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys.

If that doesn't help try a dummy plug for the card with no monitor.

[HellDiverUK]

You don't need a dummy plug.

If cgminer is showing hashing going on, then the problem is elsewhere.  I'd try a different pool as a test - Eligius is good as you don't need to register.

[BecomingPhill]

Hi all thanks for the replies.

I managed to find registry keys and change them but still no change from guiminer or 50miner (using poclbm or cgminer). When I use poclbm I get the hardware verification failed and no response at all from 50miners gui version of cgminer.

Card is installed correct I can extend my desktop onto it so it's there. Anyone know maybe if I should switch drivers?

[BecomingPhill]

Hi all,

I changed the reg keys nevertheless and strangely on 50 miner the Phoenix miner works like a charm. Guiminer is still returning the hardware verification failure though.