Claymore 9.0 Dual Mining ETH and SIA: Setup, Troubleshooting & Optimization

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Cryptocurrency mining continues to evolve, and with tools like Claymore 9.0, miners can now maximize profitability by simultaneously mining Ethereum (ETH) and Siacoin (SIA) through dual mining. This guide walks you through configuring ethOS for optimal dual mining performance using Claymore’s Dual Miner, addresses common issues such as zero hash rates or system freezes, and offers actionable solutions to keep your rig stable and efficient.

Whether you're new to Linux-based mining OS environments or refining an existing setup, this comprehensive walkthrough ensures your rig runs smoothly with minimal downtime.

Understanding ethOS and Dual Mining Configuration

ethOS is a lightweight Linux distribution tailored for GPU mining. It supports multiple miners, including Claymore, and allows advanced configurations via local.conf and remote.conf files. When dual mining ETH and SIA using Claymore 9.0, the key is correctly enabling dual mining parameters while maintaining system stability.

The user in the original post encountered several issues after modifying their local.conf file — namely zero GPU hash rates despite Ethermine showing hashrate, CPU freezes during edits, and boot failures. Let’s address these systematically.

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Fixing Zero Hash Rate Despite Pool Reporting

One of the most confusing issues described is that GPUs appear active on the desktop but report 0 MH/s locally, while Ethermine shows ~13 MH/s. This discrepancy often stems from misconfigured miner flags or incorrect miner selection.

Root Causes:

Solution Steps:

  1. Ensure Correct Miner is Set Globally or Per-Rig

    In your local.conf, explicitly define:

    globalminer claymore

    Or per-rig:

    miner [your_worker_name] claymore

  2. Enable Dual Mining Properly

    Add these lines to enable SIA dual mining:

    dualminer enabled
dualminer-coin sia
dualminer-pool sia-us-east1.nanopool.org:7777
dualminer-wallet YOUR_SIA_WALLET_ADDRESS

  3. Verify Flags Are Optimized

    Use known working flags:

    flags --cl-global-work 8192 --farm-recheck 200 --dualpool 1

    The --dualpool 1 flag ensures the secondary pool (SIA) receives proper traffic.

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Addressing System Freezes During Configuration Edits

System freezing when editing config files typically indicates resource exhaustion or filesystem corruption — common on USB-based ethOS installations.

Recommended Fixes:

Resolving ethOS Boot Failures After Reboot

If ethOS fails to boot unless the USB is reinserted, this usually points to:

Best Practices:

💡 Tip: Clone your working ethOS image using Rufus or BalenaEtcher onto multiple USBs for redundancy.

Optimizing local.conf for Stability and Performance

Here’s a clean, optimized version of the local.conf based on best practices:

# Global Settings
globalminer claymore
maxgputemp 85
stratumproxy enabled
proxywallet 0xCe97E90b12811adF865575769EF04F7c703dE1FB
proxypool1 us2.ethermine.org:4444
proxypool2 us2.ethermine.org:14444
flags --cl-global-work 8192 --farm-recheck 200 --dualpool 1

# Dual Mining Setup
dualminer enabled
dualminer-coin sia
dualminer-pool sia-us-east1.nanopool.org:7777
dualminer-wallet c3bdac90de1e328364766447440d3f192f3c920a1e88d33cf05b1de50e27b894c49d11904fda

# Fan & Power Management
globalfan 50

Replace wallet addresses and adjust clocks based on your hardware.

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Frequently Asked Questions (FAQ)

Q: Why does Ethermine show hashrate but my rig shows 0 MH/s?

A: This happens when the primary miner (e.g., Claymore) is running but not properly reporting to the local dashboard — often due to using the wrong miner binary (ethminer vs claymore) or missing flags. Ensure globalminer claymore is set and restart the rig.

Q: Can I dual mine ETH + SIA without affecting Ethereum performance?

A: Yes. Claymore uses idle GPU memory for Sia mining, typically adding 10–25% extra income with minimal impact on ETH hashrate (usually <2% drop). Monitor temperatures and stability closely.

Q: What causes random reboots or freezes in ethOS?

A: Common causes include overheating GPUs, unstable overclocks, low PSU wattage, or a failing USB drive. Check logs via dmesg or tail /var/log/messages for hardware errors.

Q: Is stratumproxy necessary for dual mining?

A: Not mandatory, but recommended. Stratum proxy reduces pool latency and improves failover handling. Keep it enabled unless using a custom proxy setup.

Q: How do I update Claymore miner in ethOS?

A: ethOS auto-updates miners by default. To force an update, run upgrade-miners from the command line. Ensure internet connectivity and sufficient space on the USB.

Q: Should I use global or per-rig settings?

A: Use global settings for uniform rigs. Use per-rig (miner [worker], flg [worker]) when managing mixed hardware or testing different overclock profiles.

Final Tips for Long-Term Mining Success

Mining profitability isn't just about raw hashrate — it's about uptime, efficiency, and avoiding avoidable downtime.

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By following this guide, you’ll resolve common issues like zero local hash rates, system instability, and boot problems — ensuring your Claymore 9.0 dual mining ETH and SIA setup runs reliably and profitably. With proper configuration and maintenance, your rig can deliver consistent returns in today’s competitive mining landscape.