Claymore dual mine sia-eth on Windows stable, but same BIOS on Linux a mess

[ben8jam]

Tuned a Sapphire Nitro 470 on Windows. Set Core at 1075-900mv, mem at 2000-1000mv and it runs very stable and fast. 27mh/s + 400mh/s . However, simply booting into Ubuntu, the card's speeds are all over the place.

If I mine just Eth with it on Ubuntu it's back to 27mhs but switching back to eth-sia it's a mess and it drawing less Wattage than the straight ETH.

I've tried to lowering the Core via command line, but it doesn't seem to affect anything. Boot back up into windows, and it runs fine. Adjusting DCRI doesn't have much effect.

Any ideas?

[Barmz]

Same here...

I found that Linux is not very stable with my rigs when mining with claymore dual miner, I finally run all of them under Windows 7 without any issue for days.

[ben8jam]

Same here...

I found that Linux is not very stable with my rigs when mining with claymore dual miner, I finally run all of them under Windows 7 without any issue for days.

The 570 cards work great. I am now painstakenly starting over from scratch editing the BIOS via ATIFLASH on linux (still using polaris on windows to make the changes) - but I think Windows has something in it that overrides the BIOS when necessary and allows it to run more stable. But I really want Linux, so hopefully will find what BIOS setting is getting over-ridden. So much fun copying files back and forth over SCP  and changing one small element at a time.