Error using prover object recompute failed to produce a candidate

[wetong]

I attempted to run the Giga11 version of Harvester on a low-end desktop with a CPU G3220, but encountered some issues. It was working properly prior to running it with the official Chia version.

2023-05-17T21:35:04.895 harvester chia.harvester.harvester: ERROR Error using prover object recompute failed to produce a candidate
2023-05-17T21:35:04.896 harvester chia.harvester.harvester: WARNING Looking up qualities on D:\plot-k32-c5-2023-05-17-10-52-e924d9823e0371905a567c18a7006e59595e45d98d24215d5c114f160d2da094.plot took: 34.72193241119385. This should be below 20 seconds to minimize risk of losing rewards.
2023-05-17T21:35:04.907 harvester chia.harvester.harvester: INFO 1 plots were eligible for farming f7c386a3fe... Found 0 proofs. Time: 34.72292 s. Total 2 plots
2023-05-17T21:35:04.918 harvester chia.harvester.harvester: ERROR File: D:\plot-k32-c5-2023-05-17-10-52-e924d9823e0371905a567c18a7006e59595e45d98d24215d5c114f160d2da094.plot Plot ID: e924d9823e0371905a567c18a7006e59595e45d98d24215d5c114f160d2da094, challenge: d8e87cb551bea5607c5fbe4f0c7a7d354b7f1ef748052ee9d0c62848de08876b, plot_info: PlotInfo(prover=<chiapos.DiskProver object at 0x000001EA3A56FB30>, pool_public_key=None, pool_contract_puzzle_hash=<bytes32: b9f02c28a130e3cbfd0a8a1a6ff8661d809bff64349e712e928ff1f9fd746e5d>, plot_public_key=, file_size=83671820338, time_modified=1684293436.1626248)

[madMAx43v3r]

does this happen all the time? if yes you probably have some iGPU that doesnt work for some reason, need to disable it.

[wetong]

Thanks, Actually it is not fail all the time, let me try to disable the Intel GPU and see what I get.

[wetong]

May need advice the way disable iGPU for the havestor under Windows, can we use set CHIAPOS_MAX_GPU_DEVICES=0 before run the havestor?

[madMAx43v3r]

yes correct, need to fully restart after setting the variable, via chia stop all -d

[wetong]

confirmed it works. thanks for the help.