Ethereum: clDevicesNum returned an error, no usable GPU

Ethereum Mining Error: Error “clDevicesNum” returned, no usable GPU

As an Ethereum miner, you are probably no stranger to the world of cryptocurrency mining. However, when trying to launch or optimize your mining setup, you may encounter errors related to clDevicesNum and FT232R scanning issues. In this article, we will take a closer look at what these errors mean and provide some tips on how to resolve them.

Error 1: Error “clDevicesNum” returned

The clDevicesNum error usually appears when the miner’s system cannot find the hardware required for Ethereum mining. This is usually caused by outdated or incompatible device drivers, as well as issues with the FT232R scanning process. To resolve this error, follow these steps:

• Update Device Drivers: Make sure your device drivers are up to date. You can check for updates in Device Manager (Windows) or System Information (Mac). For Windows:

• Right-click on “This PC” or “Computer” and select “Properties”.

• Click on “Device Manager” and expand the sections.

• Turn FT232R off and back on

  : Sometimes turning the FT232R port off and back on can resolve issues related to clDevicesNum. To do this:

A. Open Control Panel (Windows) or System Preferences (Mac).

B. Click on “FT232R” and make sure it is enabled.

z Close Control Panel and restart your computer.

Error 2: Problems with “ft232r_scan”

Some miners may encounter problems with the ft232r_scan process when scanning for FT232R devices. This can lead to errors like the ones listed above:

• Check FT232R protocol compatibility: Make sure your miner supports the FT232R protocol and that all required software components are up to date.

• Check device permissions: Make sure that the device permissions are set correctly, especially for the ft232r_scan process.

To resolve these issues, you can try the following solutions:

A. Check online forums and documentation for your miner model and FT232R version.

B. Update your miner’s firmware to ensure compatibility with the latest protocol versions.

z Check that the device permissions are set correctly and change them if necessary.

Ethereum Mining Best Practices

To troubleshoot and optimize your mining setup, keep the following in mind:

• Check System Requirements

  : Make sure your computer meets the minimum requirements to run a Bitcoin or Ethereum mining rig.

• Monitor Resource Usage: Monitor your system’s resource usage to prevent overheating and ensure optimal performance.

• Regular Maintenance: Regularly update your device drivers, disable and re-enable FT232R ports as needed, and perform other maintenance tasks to keep your system running smoothly.

By following these steps and best practices, you should be able to resolve the “clDevicesNum” error and run your Ethereum mining setup smoothly.