Use a different device address

Oct 13, 2025 by wbrum.org 130 views

BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)

Understanding the Error

When working with Bluetooth Low Energy (BLE) devices using the Bleak library in Python, you may encounter errors that can be frustrating to resolve. One such error is the BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code). This error can occur when trying to perform various operations on the BLE device, such as changing the speed, starting, or stopping the device.

Symptoms of the Error

The error is characterized by the appearance of an error window with the following message:

BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)

This error can occur even when you have successfully connected to the device via its MAC address, and other commands such as speed change, start, and stop work without issues.

Additional Information

When you run the statistics command, you still get an error. This suggests that the issue is not limited to a specific command or operation, but rather a broader problem with the BLE device or the Bleak library.

Possible Causes of the Error

There are several possible causes of this error, including:

Incorrect device address: Make sure that the device address you are using is correct and matches the actual MAC address of the BLE device.
Device not in range: Ensure that the BLE device is within range of your system and that the connection is stable.
Bleak library issues: The Bleak library may have issues with the D-Bus backend, which can cause errors like this.
Device firmware issues: The firmware of the BLE device may be causing the issue, especially if it is outdated or corrupted.

Troubleshooting Steps

To troubleshoot this error, follow these steps:

Verify device address: Double-check that the device address you are using is correct and matches the actual MAC address of the BLE device.
Check device range: Ensure that the BLE device is within range of your system and that the connection is stable.
Update Bleak library: Update the Bleak library to the latest version to ensure that you have the latest fixes and improvements.
Check device firmware: Check the firmware of the BLE device and update it if necessary.
Use a different D-Bus backend: Try using a different D-Bus backend, such as bluez5, to see if the issue persists.
Check for conflicts: Check for any conflicts with other Bluetooth devices or services on your system.

Resolving the Error

To resolve the error, you can try the following:

Use a different device address: Try using a different device address to see if the issue persists.
Use a different D-Bus backend: Try using a different D-Bus backend, such as bluez5, to see if the issue persists.
Update the Bleak library: Update the Bleak library to the latest version to ensure that you have the latest fixes and improvements.
Check for firmware updates: Check the firmware of the BLE device and update it if necessary.

Conclusion

The BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code) error can be frustrating to resolve, but by following the troubleshooting steps outlined above, you can identify and fix the issue. Remember to verify the device address, check the device range, update the Bleak library, and check for firmware updates to resolve the error.

Additional Resources

For more information on the Bleak library and its usage, refer to the official documentation:

For more information on the D-Bus backend and its usage, refer to the official documentation:

Related Articles

Troubleshooting Bluetooth Issues with Bleak
Using Bleak with Different D-Bus Backends
Resolving BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)
Frequently Asked Questions (FAQs) about BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)

Q: What is BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)?

A: BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code) is an error that occurs when trying to perform various operations on a Bluetooth Low Energy (BLE) device using the Bleak library in Python.

Q: What causes this error?

A: This error can be caused by a variety of factors, including incorrect device address, device not in range, Bleak library issues, and device firmware issues.

Q: How do I troubleshoot this error?

A: To troubleshoot this error, follow these steps:

Verify device address: Double-check that the device address you are using is correct and matches the actual MAC address of the BLE device.
Check device range: Ensure that the BLE device is within range of your system and that the connection is stable.
Update Bleak library: Update the Bleak library to the latest version to ensure that you have the latest fixes and improvements.
Check device firmware: Check the firmware of the BLE device and update it if necessary.
Use a different D-Bus backend: Try using a different D-Bus backend, such as bluez5, to see if the issue persists.
Check for conflicts: Check for any conflicts with other Bluetooth devices or services on your system.

Q: How do I resolve this error?

A: To resolve this error, try the following:

Use a different device address: Try using a different device address to see if the issue persists.
Use a different D-Bus backend: Try using a different D-Bus backend, such as bluez5, to see if the issue persists.
Update the Bleak library: Update the Bleak library to the latest version to ensure that you have the latest fixes and improvements.
Check for firmware updates: Check the firmware of the BLE device and update it if necessary.

Q: What are some common symptoms of this error?

A: Some common symptoms of this error include:

Error window with the message "BleakDBusError: [org.bluez.Error.Failed] Operation failed with ATT error: 0x80 (Unknown code)"
Failure to perform various operations on the BLE device
Error messages when running the statistics command

Q: How do I prevent this error from occurring?

A: To prevent this error from occurring, follow these best practices:

Verify device address: Double-check that the device address you are using is correct and matches the actual MAC address of the BLE device.
Check device range: Ensure that the BLE device is within range of your system and that the connection is stable.
Update Bleak library: Update the Bleak library to the latest version to ensure that you have the latest fixes and improvements.
Check device firmware: Check the firmware of the BLE device and update it if necessary.

Q: What are some related resources for learning more about this error?

A: Some related resources for learning more about this error include:

Q: Can I get help with troubleshooting this error?

A: Yes, you can get help with troubleshooting this error by reaching out to the Bleak library community or seeking assistance from a qualified developer or engineer.