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Alexey Kot2016-06-24 11:40:46
linux
Alexey Kot, 2016-06-24 11:40:46

[Ubuntu] Why does the driver for the wi-fi adapter crash (TP-Link Archer T4U)?

Hey!
There is Ubuntu 16.04 and Wi-Fi adapter TP-Link Archer T4U . I took it, as it supports 5GHz.
After installing ubuntu, it was not detected, but I found a working driver on github .
It is set like this:

# sudo cp -R . /usr/src/rtl8812AU_8821AU_linux-1.0
# sudo dkms add -m rtl8812AU_8821AU_linux -v 1.0
# sudo dkms build -m rtl8812AU_8821AU_linux -v 1.0
# sudo dkms install -m rtl8812AU_8821AU_linux -v 1.0

After that everything worked like clockwork. But after the next kernel update, the driver stopped working. If you do everything again according to the instructions, then in response it writes that all the modules are already there.
Here's what the "Additional Drivers" applet, middle section shows.
53fcf215c38f4fb189a39eefe7562c87.png
Apparently, I lack understanding of the process of installing this driver, so I can not understand why it stopped working and how to turn it back on now. Help me please.

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Alexey Kot, 2016-06-25
@CheshireCat

Solved the problem as follows:
1) Disabled SecureBoot in BIOS
2) Removed and reinstalled the module

sudo dkms remove -m rtl8812AU_8821AU_linux/1.0 --all
sudo dkms install -m rtl8812AU_8821AU_linux -v 1.0

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