Why miner.start() Returns null in Ethereum v1.7.3 and How to Verify Mining Status

In Ethereum v1.7.3 the console command miner.start() always returns null, regardless of whether mining actually starts, because the underlying Go implementation returns nil and the real status is logged or inferred from other API calls, not from the return value.

EthereumGominer.start

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Why miner.start() Returns null in Ethereum v1.7.3 and How to Verify Mining Status

Senior Brother's Insights

Feb 5, 2018 · Blockchain

Why miner.start Returns Null in Geth Dev Mode and How to Fix It

This article explains that the null return from miner.start in Geth’s dev mode is caused by a new --dev.period parameter introduced in recent versions, and shows how adding --dev.period 1 resolves the issue, allowing continuous block mining.

Ethereumdev modegeth

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Why miner.start Returns Null in Geth Dev Mode and How to Fix It

Senior Brother's Insights

Dec 6, 2017 · Blockchain

Why Does miner.start() Return Null in Geth? Common Causes and Fixes

When using Geth, miner.start() may return null even though the node appears ready, often due to missing etherbase configuration, dev‑mode false positives, or version‑specific behavior that requires a transaction to trigger block creation.

miner.start

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