Installing
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2. Enabling Realtek rtl8821CU Driver PPA
Add Realtek rtl8821CU Driver PPA for Lubuntu GNU/Linux
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3. Installing Realtek rtl8821CU Driver
Then to Install Realtek rtl8821CU Driver in Linux
Currently 2 Flavors of the Driver are available.
For the default one run:sudo apt install rtl8821cu-dkms
Instead for the Latest Kernels you may try:
sudo apt install rtl8821cu-next-dkms
Finally, in case of Issue to remove it:
sudo apt-get purge rtl8821cu*
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