Initializing GPU, loading kernel ...
It was intergrated graphics driver. After removing old drivers with DDU xmr stak was searching integrated graphics instead opencl.
Two ways to solve it:
a) disable intergrated graphics
b) dont use DDU, just install new drivers in top of old ones. After install it gives error. Restart. Make powerplay in registry. Restart. Renew OverdriveNTool and atiadlxx.dll and atiadlxy.dll under Windows\SysWOW64
Disable enable cards and it starts mining again.
Also needed to follow this post for OverdriveNtool, otherwise it wont work:
Do you have atiadlxx.dll or atiadlxy.dll in C:\Windows\SysWOW64 directory? If not, unpack driver package and copy atiadlxy.dll into C:\Windows\SysWOW64 Rename it to atiadlxx.dll and copy atiadlxy.dll again so you will have 2 identical files atiadlxx.dll and atiadlxy.dll.
And grande finale:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Cast XMR 1.5.0 CryptoNight mining optimized for AMD Radeon Vega GPUs
Coded by [glph3k] for more info visit http://www.gandalph3000.com
Donating 1.5% mining power to developer. Thanks.
For current stats press 's'
For seamless exit press 'q'
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[14:35:55] Initializing GPU, loading kernel ...
And this way it stays.. mining wont start.
Somebody else with problem like that?
Same with SRBMiner:
Initializing OpenCL devices, please wait..
I installed CastXMR v1.5.0 using same drivers 18.4.1 as when using CastXMR 1.4, the day before the hardfork hashing OK
Now the day after hardfork each vega 56 is hashing 800h/s.
Solution to fix it
1) Uninstalled Adrenalin Drivers v18.4.1 using DDU 18.0.0.2, restart
2) Installed Adrenalin Drivers v18.5.1, restart
After these two steps, overclocks/undervolt are not taking place using OverdriveNtool v0.2.6 applying one dummy overclock first, then applying desired overclock second as used to be working for me with CastXMR v1.4. After some digging, I found that applying Ati patcher was the solution to fix my setup. After all this i'm hashing 7% slower than before.
My setup working with overclock and undervolt no need for SoftPowerPlayTables is the following:
don't know if you can get the best undervolt/overclock using this method or using SoftPowerPlayTables, but works fine for me
-CastXMR v1.5.0
-Adrenalin Drivers v18.5.1 settings by default (HBCC comes off by default as well as crossfire is off by default even having more than 1 gpu)
-Apply AtiPixelClockPatcher v1.4.6 (https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher)
-OverdriveNTool v2.7 beta 4 (http://www.dropbox.com/s/equ297p3otqu28n/OverdriveNTool 0.2.7beta4.7z?dl=1)
-Added a small tweak to the script so I apply one dummy overclock using OverdriveNTool.exe, then apply another overclock which is the desired. The first overclock is to make the second overclock happen, just a trick . If you want to test different overclocks you need to restart to make it work or maybe disable and enable your cards
-Watchdog script: HashMonitor.ps1 (https://github.com/fiddlefingers/Fiddlefingers-cast_xmr-hashrate-monitor-and-restart-tool/blob/master/HashMonitor.ps1)
Cheers