Bitcoin Forum

Bitcoin => Mining support => Topic started by: timk225 on February 16, 2014, 04:33:20 PM



Title: CGMiner defaulting to on-cpu graphics problem.
Post by: timk225 on February 16, 2014, 04:33:20 PM
I have my desktop gaming pc mining alt coins and it has always done well at it, in addition to other mining computers here.

I just installed a new Samsung SSD, and put my usual SDK 2.7 and 12.8 drivers and cgminer 3.3.0 from my flash drive, as usual.

With everything loaded, installed, and updated on my new boot drive, it will show the i3-4130's Intel 4400 graphics in device manager along with the 7950 GPU.

When I try to run cgminer, it seems to be defaulting to the on-cpu graphics, and I cannot raise the miners' engine speed over 500 Mhz, and it isn't using the 7950.

The only way to make it work was to disable the Intel 4400 CPU graphics in device mananger, which would be fine except it takes out one of my three monitors.

I then reinstall the old hard drive as the boot drive, and it doesn't show the on-chip graphics in device manager, and cgminer runs normally.

Any idea what to do here?



Title: Re: CGMiner defaulting to on-cpu graphics problem.
Post by: timk225 on February 16, 2014, 05:00:57 PM
I got it fixed, I uninstalled the motherboard drivers for the video and reinstalled them.  Weird quirk, I guess.

Mine on! ;D


Title: Re: CGMiner defaulting to on-cpu graphics problem.
Post by: sgk on February 20, 2014, 07:57:54 AM
Rrun CGMiner with just -n command. That will list all GPU and their platforms. Note the GPU platform for your 7950.
You can then force CGMiner to mine on specific platform, like --gpu-platform 1