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I bought a new computer Lenovo IdeaPad S145 and made a fresh installation on Ubuntu 20.04 there. The problem is that wifi card was not detected.

I tried to install different drivers but with no success. Mainly because I can't reveal what is exact version my wifi card. The output of lspci -nnk | grep Net -A3 is just:

01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:c82f]
        Subsystem: Lenovo Device [17aa:c02f]
06:00.0 Non-Volatile memory controller [0108]: KIOXIA Corporation Device [1e0f:0001]
        Subsystem: KIOXIA Corporation Device [1e0f:0001]

So, I see that the card is Realtek but the exact version seems to be missing.

What I've tried so far:

  • Did a system update to ensure that the kernel is of latest version
  • Checked if there are soft or hard locks with rfkill - there are not
  • Tried to install 3rd party drivers, I installed rtl8821ce and rtl8192cu
  • Tried to disable airplane mode
  • Checked if there are additional drivers in Software & Updates - there are not

As advised here, I attach the wireless script output in a pastebin with more info. Please note that currently I'm connected with usb netstick, which might affect the results of the script.

Thanks in advance.

Update:

The problem was solved after installing this driver: https://github.com/lwfinger/rtw88

Zanna
  • 72,312
jutky
  • 324

3 Answers3

2

There is an issue with the kernel using in 20.04 with the driver you are needing so i suggest you to try to update your kernel, here is a tutorial

If you already have the needed kernel just jump to the fourth step

First you must uninstall all privative drivers you have(Nvidia,ATI(AMD)) mostly your video drivers this is just to prevent future troubles and reinstall them after you updated your kernel

Check this link to download the needed files

First Step) Now Download the files named:

  1. File: "linux-headers-5.7.0-050700_5.7.0-050700.202006082127_all.deb"
  2. File: "linux-image-unsigned-5.7.0-050700-generic_5.7.0-050700.202006082127_amd64.deb"
  3. File: "linux-modules-5.7.0-050700-generic_5.7.0-050700.202006082127_amd64.deb"

Second Step)

It's time to install all the debs(Gui Method)

just double click the downloaded packages and install them via software center

It's time to install all the .deb packages(terminal method)

"sudo" -Ask for admin privileges "dpkg -i" -Used to install Debian Packages

sudo dpkg -i linux-headers-5.7.0-050700_5.7.0-050700.202006082127_all.deb
sudo dpkg -i linux-image-unsigned-5.7.0-050700-generic_5.7.0-050700.202006082127_amd64.deb
sudo dpkg -i linux-modules-5.7.0-050700-generic_5.7.0-050700.202006082127_amd64.deb

Third Step)Once all packages are installed

This updates your grub to the latest kernel you have installed

Is time to run

sudo update-grub

Reboot your Laptop and now ubuntu will boot with the new kernel

Fourth Step) install this packages to compile the third party driver

sudo apt-get install --reinstall git build-essential linux-headers-generic

Then clone this git

git clone http://github.com/lwfinger/rtlwifi_new.git -b rtw88

Now you can install it

navigate to the git clone directory look for the file named "rtw8822ce.c" and search for the string "0xC822" and change it to "0xC82F" save and close the file

cd rtlwifi_new
make
sudo make install

Almost Last Step)

sudo update-grub

and reboot

Last Step)

enjoy your wifi card!

NOTE

if something fails remember to search the packages you installed and uninstall them

https://github.com/lwfinger/rtw88 https://forums.linuxmint.com/viewtopic.php?f=68&t=296139 https://forums.linuxmint.com/viewtopic.php?t=320112

Giovanni Rodríguez
  • 806
1

Have you try with "Software & Updates" tools in ubuntu 20?. Just give a try...

Go to software and updates. Go to Additional Drivers.

You will see the list of additional device are attached with your system. Choose the wifi drivers and install it.

pranz
  • 11
0

You should always be careful to install third party drivers on your system, however, the driver you stated worked for this laptop. https://github.com/lwfinger/rtw88

My 'lspci -nnk | grep Net -A3' output is

lspci -nnk | grep Net -A3 01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:c82f] Subsystem: Lenovo Device [17aa:c02f]

This proves that I have the same configuration as you from factory default, and that my answer is highly specific and relevant to this particular problem. In this case Ubuntu does not provide any additional suggested drivers so the choice to pick which of all the drivers out there should be narrowed down to a Realtek driver based on the output of the command listed above.

I would only install drivers if I had the certainty that it would not bring any risk to my system. In this case knowing that this driver works for a particular make and model of the laptop is key information, given that the support from the vendor of the hardware, is minimal, if any. Debugging lack of such driver support is not a trivial matter.

The laptop is the Lenovo IdeaPad S145. Since this laptop is fairly new, if this is a repeated problem, it is currently difficult to find any other information on this topic as I have already tried.

wolfram74
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