2019.01.16:19:39:00.717: main Phoenix Miner 4.0b Windows/msvc - Release build
2019.01.16:19:39:00.717: main Cmd line: -pool ssl://eu1.ethermine.org:5555 -pool2 ssl://us1.ethermine.org:5555 -wal 0x008c26f3a2Ca8bdC11e5891e0278c9436B6F5d1E.Rig001
2019.01.16:19:39:00.717: main No CUDA driver found
2019.01.16:19:39:06.406: main Unknown OpenCL driver version! Hashrate and stale shares may suffer
2019.01.16:19:39:06.406: main OpenCL platform: OpenCL 2.1 AMD-APP (2766.5)
2019.01.16:19:39:06.406: main Available GPUs for mining:
how do i fix this problem?
You have upgraded your driver to version that is not yet supported by PhoenixMiner (see the line Unknown OpenCL driver version! Hashrate and stale shares may suffer in the log, it will be printed as yellow warning on your screen when the miner starts).
It is not a good idea to update to drivers that are newer than the release of PhoenixMiner you are using because this means we weren't able to test this release of PhoenixMiner with these drivers and they probably won't work well (or at all). To fix the problem either upgrade to PhoenixMiner 4.1c, which supports AMD drivers up to and including 19.1.1.
Sadly 4.1c does not support 19.1.1, as it gives the Unknown OpenCL version error and suffers a hashrate loss because of it.
-clkernel 3 mode does not even work with it. ( clSetKernelArg (-49) )