Hash rate took a dive

[deforester]

Power accidentally went out and when the rig booted up again, the hash rate was way down.

Before:
ETH - Total Speed: 179.272 Mh/s, Total Shares: 4604, Rejected: 0, Time: 74:14
ETH: GPU0 29.987 Mh/s, GPU1 30.021 Mh/s, GPU2 30.054 Mh/s, GPU3 30.098 Mh/s, GPU4 30.075 Mh/s, GPU5 29.036 Mh/s
DCR - Total Speed: 5378.170 Mh/s, Total Shares: 19775, Rejected: 544
DCR: GPU0 899.601 Mh/s, GPU1 900.632 Mh/s, GPU2 901.630 Mh/s, GPU3 902.953 Mh/s, GPU4 902.262 Mh/s, GPU5 871.092 Mh/s

After:
ETH - Total Speed: 130.461 Mh/s, Total Shares: 13, Rejected: 0, Time: 00:22
ETH: GPU0 21.374 Mh/s, GPU1 21.406 Mh/s, GPU2 21.301 Mh/s, GPU3 21.376 Mh/s, GPU4 21.408 Mh/s, GPU5 23.597 Mh/s
DCR - Total Speed: 3913.821 Mh/s, Total Shares: 89, Rejected: 0
DCR: GPU0 641.211 Mh/s, GPU1 642.171 Mh/s, GPU2 639.035 Mh/s, GPU3 641.275 Mh/s, GPU4 642.235 Mh/s, GPU5 707.894 Mh/s

The has rate looks almost like before I flashed the bios. What happened?

[1715134191]

1715134191

[deforester]

Updated to latest claymore dual miner, still the same 

[P00P135]

If using windows then your probably got a graphics driver update and have to enable compute mode.  If linux then you probably got a kernel update for the scepter "fix" and have to revert to an older version.

[deforester]

If using windows then your probably got a graphics driver update and have to enable compute mode.  If linux then you probably got a kernel update for the scepter "fix" and have to revert to an older version.

Linux and an automatic update seems to be the problem. Never had an install where that has been enabled from the beginning. Thanks.

[deforester]

For anyone looking for what to do regarding the Spectre "fix": http://www.cryptobadger.com/2017/05/build-ethereum-mining-rig-faq/#kernal_update

[mine_phun]

If using windows then your probably got a graphics driver update and have to enable compute mode.  If linux then you probably got a kernel update for the scepter "fix" and have to revert to an older version.

Question about this.

"Linux miner-1 4.13.0-32-generic #35~16.04.1-Ubuntu SMP Thu Jan 25 10:13:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux"

I am running the latest kernel afaik with this Meltdown and Spectre bug fixes, however i don't see a drop in hashrate afaik because my hashrate with the RX570 is 30 MHZ+

Should everyone be affected by this or?