how do you guys get R9 290x working with cgminer?
whenever or whtaever I try i get the decrease TC increase LG error.
only way for me to mine with 290x is using Guiminer-scrypt
You don't have GPU_USE_SYNC_OBJECTS 1 and GPU_MAX_ALLOC_PERCENT 100 set.
Mainly the first, but the second is needed too.
As for a dummy plug, maybe a displayport to VGA or DVI-I so you can use dummy plugs? Or deal with it for now and hope for better drivers? I'm really counting on that last one...
http://www.amazon.com/HP-Displayport-VGA-Adapter-AS615AA/dp/B0025ZUF8K