Quote from: Jonet on May 31, 2018, 09:15:14 AM

Quote from: 74hawksfan on May 31, 2018, 04:37:18 AM

Quote from: Grumble Bumpkin on May 30, 2018, 11:53:44 PM

I have a strange problem with my miner since Windows 10 1803 and I wonder if any of you have had similar issues that you've solved. The rig is a tiny hobby system: a B250 Mining Expert with four RX580's of varying brands. All cards have modded BIOSs, and I overclock using my start.bat options.

I looked back through the mining logs from Claymore (11.2 at the time) to see that before the update restart, all cards were going at near 31 Mh/s, a rate that it had been maintaining for months with no problem. After the update, all cards were running at 18.5 Mh/s.

When I noticed, I updated my AMD drivers to 18.5.1 and set it to compute mode, and updated Claymore to 11.7. At that point, one of my four cards was back to 30 Mh/s, all the rest remained at 18.5 Mh/s. I've checked my VM, which is at 48000 MB, so I doubt that's an issue. I haven't managed to locate anyone else on here reporting a similar issue, so I'm wondering if any of you have dealt with this and if so, how?

Thanks!

That's really interesting, I have 13 cards on same board, and I just added one of them to the system. Should be the best one for mining but it's running at 18 mh/s and all others 25+.
Love to know what's going on there, I'm in newest CM and newest driver as well, Win10 1709

Did you set all GPUs to compute? It is a setting in the registry under each GPU. With AMD settings software you have to set them one by one. CM with Y or AMD-Compute-Swithcer will set all installed GPUs to compute, but when you add GPUs after that, they will not be set to compute by default. Sorry if you already knew this. Wink

Fantastic catch, Jonet. In looking back to the Radeon settings, it appears that "global" settings is only for each card individually, which is a bit misleading lol. Anyway, you are correct and all cards are back up to 31 Mh/s now! Thanks!