Mining Troubleshooting

This guide covers common mining issues and their solutions.

Common Issues

Miner Won't Start

Symptoms:

• Miner crashes immediately
• Error on startup
• GPU not detected

Solutions:

# Check GPU detection
nvidia-smi  # For NVIDIA
rocm-smi    # For AMD

# Update GPU drivers
# NVIDIA
sudo apt install nvidia-driver-535

# AMD
sudo amdgpu-install

# Check miner compatibility
./miner --help

Low Hash Rate

Symptoms:

• Hash rate significantly below expected
• Inconsistent performance

Solutions:

# Check GPU temperature
nvidia-smi  # Should be below 80°C

# Check power limit
nvidia-smi -pl 200  # Set power limit

# Memory overclock (NVIDIA)
nvidia-settings -a "[gpu:0]/GPUMemoryTransferRateOffset[3]=1000"

# Check for thermal throttling
nvidia-smi -q -d TEMPERATURE

Expected Hash Rates:

GPU	Expected	If Lower
RTX 3080	50-55 Sol/s	Check temps, power limit
RTX 3070	38-42 Sol/s	Update drivers
RX 6800 XT	48-52 Sol/s	Check memory timings
RX 6700 XT	33-37 Sol/s	Update BIOS

High Temperature

Symptoms:

• GPU temperature above 80°C
• Thermal throttling
• Miner crashes under load

Solutions:

# Increase fan speed
# NVIDIA
nvidia-settings -a "[gpu:0]/GPUFanControlState=1"
nvidia-settings -a "[fan:0]/GPUTargetFanSpeed=80"

# AMD
rocm-smi --setfan 80

# Undervolt (NVIDIA)
nvidia-settings -a "[gpu:0]/GPUGraphicsClockOffset[3]=-100"

# Improve airflow
# - Clean dust from GPUs
# - Add case fans
# - Improve cable management

Rejected Shares

Symptoms:

• High rejection rate
• "Invalid share" errors
• Pool rejects shares

Solutions:

1. Verify Algorithm:

# Ensure you're using ZelHash
./miner --algo zelhash ...

2. Check Stratum Connection:

# Test connection
nc -zv cs.miningtothelastblock.top 3333

3. Update Mining Software:

# Download latest version
wget https://github.com/develsoftware/GMinerRelease/releases/latest

4. Check System Clock:

# Sync time
sudo ntpdate pool.ntp.org

Connection Issues

Symptoms:

• Cannot connect to pool
• "Connection refused" errors
• Frequent disconnections

Solutions:

# Check firewall
sudo ufw status
sudo ufw allow 3333/tcp

# Test pool connectivity
ping cs.miningtothelastblock.top
nc -zv cs.miningtothelastblock.top 3333

# Try alternative pool
./miner --server cs.miningtothelastblock.top ...

# Check DNS
nslookup cs.miningtothelastblock.top

Worker Not Showing on Pool

Symptoms:

• Mining but worker not visible on pool dashboard
• No shares recorded

Solutions:

1. Wait 5-10 minutes — Pools have delay
2. Verify wallet address:

# Check your address format
cs-cli getnewaddress

3. Check worker name format:

Correct: wallet_address.worker_name
Incorrect: just_worker_name

4. Verify shares are being submitted:

Look for "Share accepted" in miner output

GPU-Specific Issues

NVIDIA GPUs

CUDA Error:

# Update CUDA drivers
sudo apt update
sudo apt install nvidia-cuda-toolkit

# Check CUDA version
nvcc --version

Out of Memory:

# Reduce intensity
./miner --algo zelhash --intensity 20 ...

# Close other GPU applications
pkill -f "gpu_app"

AMD GPUs

OpenCL Error:

# Install ROCm
sudo amdgpu-install --usecase=rocm

# Verify OpenCL
clinfo

Memory Timing Issues:

# Use AMD Memory Tweak
memory-tweak -m 1  # For Samsung memory
memory-tweak -m 2  # For Hynix memory

System Issues

Out of Memory (RAM)

# Check available RAM
free -h

# Increase swap
sudo fallocate -l 8G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

CPU Bottleneck

# Check CPU usage
top

# Reduce miner CPU usage
./miner --algo zelhash --cpu-priority 2 ...

Disk Space

# Check disk space
df -h

# Clean up
sudo apt clean
rm -rf /tmp/*

Advanced Troubleshooting

Enable Debug Logging

# GMiner debug
./miner --log log.txt --debug ...

# T-Rex debug
./t-rex --debug ...

Network Diagnostics

# Trace route to pool
traceroute cs.miningtothelastblock.top

# Check latency
ping cs.miningtothelastblock.top

# Test bandwidth
speedtest-cli

Performance Profiling

# Monitor GPU performance
watch -n 1 nvidia-smi

# Monitor power consumption
nvidia-smi --query-gpu=power.draw --format=csv -l 1

Getting Help

Information to Provide

When asking for help, include:

1. GPU model and count
2. Mining software and version
3. Operating system
4. Error messages (full output)
5. Pool being used
6. Hash rate achieved vs expected

Support Channels

• Discord: https://discord.gg/jxDZ4EHD
• GitHub Issues: https://github.com/MauricioSpagnol/cloudservice/issues
• Telegram: https://t.me/cscoin

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Next Steps

• Mining Overview — Back to overview
• Mining Pools — Pool information
• Wallet Setup — Secure your earnings