RTL8812BU USB 3.0 Adapter Detection Issue

RTL8812BU USB 3.0 WiFi Adapter Not Detecting USB 3.0 Device

Abstract: Users of the RTL8812BU USB 3.0 WiFi adapter report issues with the device not detecting USB 3.0 devices. This issue has been observed in Ubuntu 22.0.4 with kernel 6.15.0-44, although the driver has been mainlined since version 6.2. Attempts to use a USB 3.0 device instead result in detection as a USB 2.0 device.

Created: 2024-07-23 by UserComp.com Editors

RTL8812BU USB 3.0 WiFi Adapter Not Detecting USB 3.0 Device

The RTL8812BU USB 3.0 WiFi adapter is a popular wireless networking device that offers fast speeds and reliable connectivity. However, it has been reported that some users are experiencing issues when trying to use the adapter with a USB 3.0 port. Specifically, the adapter is not detecting the USB 3.0 device and is instead being detected as a USB 2.0 device, which can result in slower speeds and decreased performance.

Driver support for RTL88X2BU

The RTL88X2BU driver is incorporated into the mainline kernels since version 6.2. Ubuntu 22.0.04 kernel version is 6.15.0-44 and it should support RTL88X2BU. However, some users have reported that the USB 3.0 device is not being detected and is instead being detected as a USB 2.0 device.

Troubleshooting steps

Here are some troubleshooting steps that you can try to resolve the issue:

Check that the USB 3.0 port is working properly by trying a different device in the same port.
Check that the RTL8812BU USB 3.0 WiFi adapter is properly connected to the USB 3.0 port.
Check that the RTL88X2BU driver is installed and up to date. If not, you can install it using the following command:


sudo apt-get install rtl88x2bu-dkms

Try unloading and reloading the driver using the following commands:


sudo modprobe -r rtl88x2bu
sudo modprobe rtl88x2bu

References

This article provides an overview of the issue with the RTL8812BU USB 3.0 WiFi adapter not detecting USB 3.0 devices. It covers the driver support for RTL88X2BU, and troubleshooting steps to resolve the issue. The references provided include links to the RTL8812AU GitHub repository, Ubuntu Kernel Debugging Procedures, and Ubuntu Community WifiDocs for RTL8812AU.

Note: This article is intended to provide general information about the issue and troubleshooting steps. It is not a guarantee that the issue will be resolved by following the steps outlined in this article. If the issue persists, it is recommended to contact the manufacturer or seek further assistance from a qualified technician.

Summary:

RTL8812BU USB 3.0 WiFi adapter not detecting USB 3.0 device
Driver support for RTL88X2BU in Ubuntu 22.0.04 kernel version 6.15.0-44
Troubleshooting steps: check USB 3.0 port, check connection, install/update driver, unload/reload driver
References: RTL8812AU GitHub Repository, Ubuntu Kernel Debugging Procedures, Ubuntu Community WifiDocs for RTL8812AU

Types of references:

GitHub Repository
Ubuntu Community Documentation
Ubuntu Kernel Debugging Procedures

Tags: RTL8812BU USB 3.0 WiFi Adapter Driver Linux

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