Open-Source Troubleshooting Guide

201 error codes and fixes for Open-Source ASIC miners.

Manufacturer

Severity

DIY Difficulty

201 results

Bitaxe – USB-C PD Negotiation Failed (Programming Port)

Bitaxe Supra (board rev 3+ with FUSB302B PD controller), Bitaxe Gamma (boards...

Bitaxe – Serial Console Outputs Junk / Wrong Baud Rate

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma (BM1370), Bitaxe GT (BM1370),...

Bitaxe – Display Shows Garbage / Corrupted Characters

Bitaxe Supra, Ultra, Gamma 601, Gamma 602, GT, Hex (any Bitaxe with...

Bitaxe – AxeOS HTTPS Redirect Blocks Dashboard Access

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, UltraHex, Max (every...

Bitaxe – iOS 401 Authentication Error on AxeOS Dashboard

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, UltraHex, Max —...

Bitaxe – DHCP Lease Expired / Random Disconnects

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma (BM1370), Bitaxe GT (dual...

Bitaxe – NTP Sync Failure / Clock Drift Breaking Stratum

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, Max (every ESP32-S3...

Bitaxe – Won’t Connect to hostapd / Linux-Generated Hotspots

Bitaxe Supra, Bitaxe Ultra, Bitaxe Gamma, Bitaxe GT, Bitaxe Hex (all current...

Bitaxe – Swarm Mode Fails After Firmware Upgrade

Bitaxe Supra, Bitaxe Ultra, Bitaxe Gamma (601 / 602), Bitaxe Gamma Turbo...

Bitaxe – ‘No Share in Coinbase Reward’ Warning (256 / Testnet4)

All Bitaxe variants: Bitaxe Supra, Bitaxe Ultra, Bitaxe Gamma 601, Bitaxe Gamma...

Bitaxe – Pool Difficulty Change with cleanJob=false Not Handled

Bitaxe Supra, Ultra, Gamma, Gamma Turbo (GT), Hex, Max — all variants...

Bitaxe – SPIFFS www Partition Missing / Web UI 404

Bitaxe Supra, Ultra, Gamma, Gamma Turbo / GT, Hex, UltraHex (every ESP-Miner...

AxeOS Solo Mode Toggle Missing After Firmware Update

Bitaxe Supra (BM1368), Bitaxe Ultra (BM1366), Bitaxe Gamma / Gamma Turbo /...

set_extranonce Race Condition — Missed Solo Block

Open-source / solo-pool miners: Bitaxe (Supra, Ultra, Gamma, GT, Hex, Max), NerdMiner,...

Immersion Tank First Fill — Contamination From Skipped DI Flush

Any miner deployed in a single-phase dielectric immersion tank during initial commissioning...

Immersion Fluid Oxidation and Darkening Over Time

Single-phase immersion-cooled mining tanks of any chassis brand (Antminer, Whatsminer, Avalon, Bitaxe,...

Immersion Cooling Biofouling Clogs Microchannels

Immersion-cooled ASICs running a secondary dielectric loop through chip-level microchannel cold-plates: Antminer...

Sealed Immersion Tank Overpressure — Relief Valve Trip

Sealed single-phase immersion tanks (mineral oil, synthetic ester, hydrocarbon dielectric, ElectroSafe-class fluids)...

Immersion Cooling Label Peeling — Adhesive Failure

Single-phase immersion-cooled tanks of any chassis brand running synthetic hydrocarbon dielectric. Specifically:...

DNS Timeout on Stratum Hostname Resolution

All Antminer (S9 / S17 / S19 / S21 / L7 /...

Router NAT Table Overflow — Miners Drop From Pool

Multi-miner home setups behind any consumer-grade router: TP-Link Archer / Asus RT-AX...

Stratum Proxy Disconnects Worker After Timeout

Any miner behind a stratum proxy: ckpool / ckpool-proxy, slush0 stratum-proxy, Braiins...

Pool Failover Instant Fallback Loop Between Primary/Backup

All ASIC miners (Antminer S9 / S17 / S19 / S21 series,...

Public Pool ESOCKETTIMEDOUT on getmininginfo

Self-hosted Public Pool on Umbrel, Start9, RaspiBlitz, MyNode, or standalone Docker —...

Ocean Pool DATUM Template Error

Any Bitcoin miner pointed at Ocean — Bitaxe (Supra, Ultra, Hex, Gamma,...

Braiins Pool Rejects Blank Password Field

Any miner pointed at Braiins (stratum.braiins.com / eu.stratum.braiins.com / us-east.stratum.braiins.com / asia.stratum.braiins.com...

Pool SSL/TLS Handshake Failed — Certificate Errors

All ASIC families (Antminer S9/S17/S19/S21 series, Whatsminer M30/M50/M60 series, Avalon 1166-1566, Iceriver...

Pool Difficulty Variance — Share Rejection Spike Explained

All miners pointed at variable-difficulty (vardiff) pools — Antminer S9, S17, S19,...

extranonce_subscribe Unknown Method Error

All ASIC and open-source miners that send `mining.extranonce.subscribe` during pool handshake —...

ZY12PDN PD Trigger Set Wrong Voltage Damaged Bitaxe

Bitaxe Supra (board 401/402, single BM1368, 5V/6A barrel), Bitaxe Ultra (board 204,...

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Last reviewed May 7, 2026.