Are you mining on a P2P pool and could you please post your config?
I am mining directly to the wallet in a solo setup. 2 GPU rigs, 1 with 4x 280x, 1 with 3x 290. I have the wallet running on a PC which has a 260x and is also mining it.
I've noticed that if the waiting for work message is scrolling after finding a block on the 290 rig, stopping the miner on the 260x wallet PC allows the 290 to resume.
here are the configs for each:
290:
{
"pools": [
{
"name" : "Smartcoin solo",
"url" : "http://192.168.1.117:58583",
"user" : "user",
"pass" : "x",
"algorithm" : "darkcoin-mod",
"xintensity": "500",
"worksize": "64"
}
],
"vectors" : "1",
"gpu-engine" : "1030,1040,1030",
"gpu-threads": "1",
"gpu-powertune" : "20",
"shaders" : "2560",
"thread-concurrency" : "10240",
"temp-cutoff" : "95",
"expiry" : "30",
"scan-time" : "15",
"queue" : "0",
"temp-overheat" : "85",
"temp-target": "70",
"api-allow" : "W:127.0.0.1",
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4001",
"auto-fan" : true,
"hamsi-expand-big" : "4",
"log" : "5",
"temp-hysteresis" : "3"
}
260x:
{
"pools" : [
{
"name" : "Smartcoin solo",
"url" : "http://localhost:58583",
"user" : "user",
"pass" : "x",
"algorithm" : "darkcoin-mod",
"nfactor" : "10",
"worksize": "64",
"xintensity" : "120"
}
],
"gpu-engine" : "1200",
"gpu-memclock" : "1500",
"gpu-powertune" : "-20",
"vectors" : "1",
"kernel" : "zuikkis",
"lookup-gap" : "2",
"shaders" : "896",
"thread-concurrency" : "8000",
"gpu-threads" : "1",
"auto-fan" : true,
"temp-target" : "58",
"log" : "5",
"log-dateformat" : "1",
"queue" : "2",
"scan-time" : "15",
"expiry" : "30",
"scrypt" : true,
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4001",
"api-allow" : "W:127.0.0.1",
"extranonce-subscribe" : true
}