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Amandeep Singh
Asked: 2024-09-17 05:10:11 +0800 CST

Ubuntu WiFi issue: rtw_8822bu failed to get tx report from firmware

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My PC's Wifi stopped working recently, probably after a kernel upgrade or so. The Wifi connects to the SSID & the port is assigned an IP address. However I am not able to Ping anything apart from the host itself. Tried rebooting, re-connecting, Wifi Router reboot, Disabled GUFW, etc but nothing worked. Everything else is working fine in the LAN.

Tried to add below Grub boot parameter, but it dint helped:

pcie_aspm=off

Changed the below parameter to disable power saving mode, dint helped even - /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf:

wifi.powersave = 3 ==> 2

Changed the Power saving mode in Power management to Balanced, issue still existed.

Wifi Dongle is TP-Link Archer T3U [Realtek RTL8812BU]

I suspect either a bug in kernel or firmware or else hardware issues. Please guide me to figure out the issue and help resolve if possible.

Below is the output of DMESG command and Wireless-info script:

wireless

1 Answers

  1. Best Answer

    I suspect your TP-LINK ARCHER T3U [RTL8812BU] driver is not working for the new kernel.

    https://www.tp-link.com/uk/home-networking/adapter/archer-t3u/#overview

    Supports Windows 10/8.1/8/7/XP, Mac OS X

    Linux?

    Your current driver:: Archer T3U [Realtek RTL8812BU] 6.8.0-41-generic (& you are using this kernel) I could not find an TP-LINK ARCHER T3u linux driver for this device.

    You could try the driver here. I think yours is on this. (8812bu). However, it will involve working with sources and the ubuntu DKMs (Auto rebuild mechanism for drivers etc).

    https://github.com/morrownr

    Compatible Kernels

    Kernels: 4.19 - 5.11 (Realtek)
Kernels: 5.12 - 6.9 (community support)

    You can remove the current driver with the following command

    sudo modprobe -r rtw_8822bu

    sudo modprobe rtw_8822bu should re-install it

    installation

    Open a gnome-terminal

    sudo apt update && sudo apt upgrade #normal updates

    sudo apt install -y build-essential dkms git iw #Tools needed

    mkdir -p ~/src #make a directory to place the sources

    cd ~/src #move to directory

    git clone https://github.com/morrownr/88x2bu-20210702.git #download sources

    cd ~/src/88x2bu-20210702 #Move into sources

    sudo ./install-driver.sh #(Note to remove it run remove-driver.sh).

    If you are running secure boot and you have not installed a mokkey the driver will not get signed so it will not run. The instructions on the site do give some advice regarding this. (In particular the section on manual installation.)

    I think it is a good idea to reboot before you starting testing.

    To check the driver is installed in the dkms (for auto build when the kernel gets updated) run the following

    sudo dkms status

    I hope this is of some help

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