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trexminer / T-Rex

T-Rex NVIDIA GPU miner with web control monitoring page
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LHR unlock slowly decreases 74.6 to 49.4 (slowly) after pool connection error #1154

Open nrpeyton opened 2 years ago

nrpeyton commented 2 years ago

Hi,

While dual mining Alephium and Etherium, one of two cards LHR unlock decreased from 74.6 to 49.4 (slowly) over more than 24hrs before I noticed the unusually low hashrate on my 3070Ti. (Other card in the system is a 3080Ti).

I wanted to know what caused it, so I restarted and checked the log and it seems to have begun after a temporary pool connection error:

"20220306 00:14:29 ERROR: No connection with us1.ethermine.org:4444, retry after 10 seconds"

I have included a copy of the log file (cut/pasted to the start of the problem)

P.S:- Log, (cut & pasted) from the start of the issue. t-rex log (slow lhr decrease).txt

trexminer commented 2 years ago

Hi, not sure what could cause it, but one weird thing I noticed is the GPU#0 typically consumes 260W+ whereas after the connection was restored it would only go up to 142W - no surprise why the miner thinks it hit LHR because it's probably hashing ethash at a significantly lower speed than usual. My guess it could be some power related (or driver) issue that throttled the GPU and tricked T-Rex into thinking it was constantly hitting LHR. I doubt it's a T-Rex bug (still possible of course) given that the second GPU was behaving normally.

pachcolom commented 2 years ago

@nrpeyton check the NVIDIA driver. I experienced this a few weeks ago. Somehow the NVIDIA driver auto-updated and was causing the LHR to decreased to similar values.