I'm a newbie, so I can't post to the proper forum, I'm hoping someone will take pity on me and help with a cgminer problem.
I'm running cgminer 2.3.1 (latest version) on Windows 7 with a pair of Radeon HD 6670 cards. One card has dual monitors attached to it, the other is just there for mining. At night when I'm not using the PC, I run with a configuration that runs two threads per GPU - no problems there. During the workday, I have cgminer configured to use only the headless GPU for mining - it's effectively disabled on the GPU that has my displays attached. However, it's still severely affecting my display performance - screen refreshes are painfully slow. I didn't have this problem before installing the second GPU, so I'm thinking it's likely something I have configured incorrectly.
Here's my daytime cgminer config:
{
"pools" : [
{
"url" : "*****",
"user" : "*****",
"pass" : "*****"
}
],
"device" : "1",
"gpu-threads" : "0,2",
"gpu-engine" : "800,850",
"gpu-memclock" : "667,800",
"auto-fan" : true,
"temp-target" : "75",
"temp-overheat" : "80",
"temp-cutoff" : "85",
"temp-hysteresis" : "3",
"kernel-path" : ".",
"intensity" : "d,7",
"expiry" : "120",
"failover-only" : true,
"log" : "5",
"queue" : "1",
"retry-pause" : "5",
"scan-time" : "60",
"donation" : "0.1"
}
Shouldn't the line "device" : "1" effectively disable device 0 as far as mining is concerned? The cgminer output makes it look like it's disabled, but it doesn't perform like it's disabled. Here's the cgminer console screen header, clearly showing that GPU 0 (the display card) is "OFF":
cgminer version 2.3.1 - Started: [2012-03-06 12:49:21]
--------------------------------------------------------------------------------
(5s):63.3 (avg):79.9 Mh/s | Q:3 A:0 R:0 HW:0 E:0% U:0.00/m
TQ: 1 ST: 1 SS: 0 DW: 0 NB: 1 LW: 0 GF: 0 RF: 0
Connected to ***** with LP as user *****
Block: 0000043571d84726ffaaa1064d78b8ca... Started: [12:49:21]
--------------------------------------------------------------------------------
[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
GPU 0: 35.0C 80% | OFF / 0.0Mh/s | A:0 R:0 HW:0 U:0.00/m I: 0
GPU 1: 55.5C 84% | 112.2/118.5Mh/s | A:0 R:0 HW:0 U:0.00/m I: 7
--------------------------------------------------------------------------------
I had better display performance before I added the second dedicated Radeon HD 6670, and was using one card (with just one mining thread) for both mining and driving my two monitors.
Any help will be greatly appreciated!