Removing driver with dkms and reinstall it by following this instruction manual.
The following instructions (also available at https://linux.brostrend.com) install the appropriate drivers for the AC1L, AC3L and AC5L BrosTrend WiFi adapters in any of the supported distributions. Linux kernels (>= 6.2) include their own drivers for our AC1L/AC3L/AC5L adapters, so they work out of the box in recent distributions, but these drivers aren't yet as mature as ours, so if you encounter any issues, use our installer to replace them.
It's a good idea to fully update and reboot your system with sudo apt update && sudo apt upgrade && sudo reboot before running the installer, as it will avoid a common issue where users have a different running kernel than the installed kernel headers.
Installation steps:
Please note that an internet connection is required at the time of installation, in order to be able to download the driver and its dependencies (dkms (sudo apt install dkms), linux-headers...). That means that you'll have to use a wired connection (LAN cable) or mobile phone WiFi-to-USB tethering.
Insert the WiFi adapter into a USB port.
Select all the following line and right-click → copy it to the clipboard: sh -c 'wget linux.brostrend.com/install -O /tmp/install && sh /tmp/install'
Open a terminal. Right-click → paste the previous command in order to execute it. If it fails with wget: command not found please try one of the alternative installation commands.
The installer requires root rights, so it will ask for your password. It will then automatically download and install the driver for you. When the installer finishes, the driver should be automatically loaded, but in special cases, a reboot might be necessary.
source: revised from AC1L AC3L AC5L Linux Manual BrosTrend WiFi Adapter v8
