For the impatient, here is HVC cgminer version that works on 1gh:
https://github.com/reorder/cgminer_skeinIt currently only works with GCN cards (or so I believe). No binaries are available as it is a WIP, and
I will not provide support for this version.
Please configure with './autogen.sh --enable-heavy --enable-opencl' and run with '--heavy --vote 1024' (or your preferred vote). Best intensity setting seems to be 3 for all cards, but you may have luck with higher values.
Fails to start on 7850 with a segfault:
...
#14 0x00007f71b3743ca3 in ?? () from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#15 0x00007f71b3753327 in ?? () from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#16 0x00007f71b374fd7e in ?? () from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#17 0x00007f71b36f6d3e in ?? () from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#18 0x00007f71b3704338 in ?? () from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#19 0x00007f71b36e55e7 in clBuildProgram ()
from /opt/AMDAPP/lib/x86_64/libamdocl64.so
#20 0x000000000043798c in initCl (gpu=gpu@entry=0,
name=name@entry=0x7fff902fcf70 "Pitcairn", nameSize=nameSize@entry=256)
at ocl.c:703
#21 0x000000000043398e in opencl_thread_prepare (thr=)
at driver-opencl.c:1647
#22 0x0000000000406ad2 in main (argc=1, argv=) at cgminer.c:8694
Not pretending to get support, just a notification. --skein works fine.