[SOLVED] No Wifi On Fresh Install [20.2]

[yassir56032]

Just installed linux mint on my laptop and I can't seem to get wifi to work. I got dual boot and win10 seems to have wifi working. Wifi has never worked on linux so far (even on my usb install) . I even did a reinstall of the OS and no luck.
here's what I got from running

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$ wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
$cat wireless-info.txt | nc termbin.com 9999

https://termbin.com/5jgj

[kc1di]

You have a realtek wifi card and it will need firmware and drivers to work.
See here for instructions on getting that done - You will need a Ethernet connection to download the correct files.
https://easylinuxtipsproject.blogspot.c ... altek.html

[JeremyB]

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sudo apt install git dkms
git clone https://github.com/lwfinger/rtl8723du.git
sudo dkms add ./rtl8723du
sudo dkms install rtl8723du/0.1

Reboot

[yassir56032]

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sudo apt install git dkms
git clone https://github.com/lwfinger/rtl8723du.git
sudo dkms add ./rtl8723du
sudo dkms install rtl8723du/0.1

Reboot

the line

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sudo dkms install rtl8723du/0.1

keeps returning an error:

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Kernel preparation unnecessary for this kernel.  Skipping...
Building module:
cleaning build area....(bad exit status: 2)
make -j2 KERNELRELEASE=5.4.0-89-generic -C /lib/modules/5.4.0-89-generic/build M=/var/lib/dkms/rtl8723du/0.1/build...(bad exit status: 2)
Error! Bad return status for module build on kernel: 5.4.0-89-generic (x86_64)
Consult /var/lib/dkms/rtl8723du/0.1/build/make.log for more information.

here's the contents of make.log:

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DKMS make.log for rtl8723du-0.1 for kernel 5.4.0-89-generic (x86_64)
Sun 24 Oct 2021 04:01:42 PM +04
make: Entering directory '/usr/src/linux-headers-5.4.0-89-generic'
/var/lib/dkms/rtl8723du/0.1/build/Makefile:63: /usr/src/linux-headers-5.4.0-89-generic/hal/phydm/phydm.mk: No such file or directory
make[1]: *** No rule to make target '/usr/src/linux-headers-5.4.0-89-generic/hal/phydm/phydm.mk'.  Stop.
make: *** [Makefile:1762: /var/lib/dkms/rtl8723du/0.1/build] Error 2
make: Leaving directory '/usr/src/linux-headers-5.4.0-89-generic'

[JeremyB]

Must be something wrong with the dkms file, for now do

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cd rtl8723du
make
sudo make install

Reboot

[yassir56032]

You have a realtek wifi card and it will need firmware and drivers to work.
See here for instructions on getting that done - You will need a Ethernet connection to download the correct files.
[url]https://easylinuxtipsproject.blogspot.c ... altek.html[/url]

I've installed the correct drivers for my wifi card just now, which has the chipset RTL8723DU (unless there is a difference between RTL8723DU and RTL8723DU Wireless?). After going through the installation via synaptic, specifically it's rtl8723du-dkms version (5.2.15.2~focal2).

I of course still don't get wifi though, trying to reload the module:

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sudo modprobe -r rtl8723du
modprobe: FATAL: Module rtl8723du not found.

sudo modprobe -r rtl8723du-dkms
modprobe: FATAL: Module rtl8723du-dkms not found.

synaptic shows the module though, it's clearly here, but it doesn't actually work. I've also tried to reinstall it. Going to try to reboot but I doubt that'll do it.

[yassir56032]

Must be something wrong with the dkms file, for now do

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cd rtl8723du
make
sudo make install

Reboot

That did it, thanks a lot! Now I just need to fix the found on this thing and I'm all set

[JeremyB]

After a kernel update you will need to

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cd rtl8723du
make clean
make
sudo make install