I'd seen in a few places that XP doesn't require dummy plugs to run headless or see cards that aren't plugged into monitors
nope, you need dummy plugs, or go with linuxcoin 
Topic: Dummy plugs in XP? (Read 1334 times)
So I threw together a rig, mostly from parts I already had, and went with Windows XP since I'd seen in a few places that XP doesn't require dummy plugs to run headless or see cards that aren't plugged into monitors but OpenCL still appears to identify only the card I've got a monitor on. Have I been steered wrong? Does XP really require dummy plugs too or have I just missed a step somewhere?
Have you tried this:http://forum.bitcoin.org/index.php?topic=11595.msg163462#msg163462 GUIMiner shows "Cypress
No just a dummyplug or 2nd monitor, and extending the desktop to the 2nd monitor/dummy for the 2nd gpu to show up for opencl - " and my CPU only. I shouldn't need the Crossfire cable or anything like that right?
GUIMiner shows "Cypress
- " and my CPU only. I shouldn't need the Crossfire cable or anything like that right?
Both cards show up in device manager, they're both available in Afterburner, but GUIMiner doesn't see them and if I try to manually launch a miner on the 2nd GPU from command prompt it doesn't work. Am I going to be stuck running to Radio Shack tomorrow?
Not only that but you can only oc the 1st gpu, I wasted too much time installing xp trying to figure that out and then installing vista.
Both cards show up in device manager, they're both available in Afterburner, but GUIMiner doesn't see them and if I try to manually launch a miner on the 2nd GPU from command prompt it doesn't work. Am I going to be stuck running to Radio Shack tomorrow?
So I threw together a rig, mostly from parts I already had, and went with Windows XP since I'd seen in a few places that XP doesn't require dummy plugs to run headless or see cards that aren't plugged into monitors but OpenCL still appears to identify only the card I've got a monitor on. Have I been steered wrong? Does XP really require dummy plugs too or have I just missed a step somewhere?
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