Help me to make my wifi work in lenovo ideapad 330s

Question

Please teach me a step by step method on how to connect my wifi on my lenovo ideapad 330s. It says Wifi adapter not found. Im using ubuntu LTS 20.04

lspci -knn | grep Net -A3; rfkill list

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
03:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8621] (rev 01)
Subsystem: Lenovo SD/MMC Card Reader Controller [17aa:3808]
Kernel driver in use: sdhci-pci

Edit:

ip link show

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000`

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

2: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000

link/ether 8a:d4:d7:81:dd:18 brd ff:ff:ff:ff:ff:ff

sudo ip link set dev usb0 down

`Cannot find device "usb0"`

I'm also unable to connect to the internet using USB and Bluetooth tethering. It says Activation of network connection failed.

Please [edit] your question and add output of lspci -knn | grep Net -A3; rfkill list terminal command. — Pilot6, May 03 '20 at 11:05
Im sorry, I'm a completely newbie on ubuntu OS. I already edited it. — John Vincent, May 03 '20 at 21:34
Does this answer your question? How to install Wi-Fi driver for Realtek RTL8821CE on Ubuntu 18.04? — Pilot6, May 03 '20 at 21:39
I cannot use ethernet, my pc have hdmi and I dont have usb to ethernet adapter yet. Is there anyway I can make it work without connecting my pc to internet first? — John Vincent, May 03 '20 at 21:54
Connect your phone and this will give you a temporary connection. — Pilot6, May 03 '20 at 22:02
I tried it, I also disabled secure boot as what they said. And this is what the output on the terminal: — John Vincent, May 03 '20 at 22:34
Please [edit] your question to add output. Select the text and use {} to format. — Pilot6, May 03 '20 at 22:47
Run sudo apt update first. And also build-essential linux-headers-$(uname -r) is not needed for 20.04. — Pilot6, May 03 '20 at 22:49
To aid in connecting your phone see this: How to use mobile wi-fi to connect Internet? — WinEunuuchs2Unix, May 03 '20 at 22:55

Gryu · Answer 1 · 2020-05-04T09:37:57.790

Try this:

sudo apt install git
git clone https://github.com/tomaspinho/rtl8821ce.git
cd rtl8821ce
sudo apt install bc module-assistant build-essential dkms
sudo m-a prepare
sudo ./dkms-install.sh
reboot

You could also try:

Show Applications gnome menu ->
Enter into Search field Additional keyword
and open Additional Drivers (opened tab in Software & Updates window will appear).
Look if there's your wifi-drivers present.

Some new Yoga laptops (like the Yoga 530) come with rtl8821ce as the Wi-Fi/Bluetooth chip. But the ideapad-laptop module, which may come included in your distribution, may conflict with this driver. To disable:
sudo modprobe -r ideapad_laptop

For USB tethering, try mac address changing:

First of all try a different cables
ip link show - run in terminal to see what devices it shows
Connect your phone to your laptop and enable USB tethering

ip link show - run in terminal to see changes (the new usb0 network device appeared in my case):

4: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether 7a:20:09:6d:dd:a1 brd ff:ff:ff:ff:ff:ff

sudo ip link set dev usb0 down

4: usb0: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
    link/ether 7a:20:09:6d:dd:a1 brd ff:ff:ff:ff:ff:ff

sudo ip link set dev usb0 address 8a:20:09:6d:dd:a1

sudo ip link set dev usb0 up

4: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether 8a:20:09:6d:dd:a1 brd ff:ff:ff:ff:ff:ff

As you can see, I've changed my usb0 network adapter's mac address from 7a to 8a at the beginning of it.

When I try to usb tether it only says "Activation of network connection failed". — John Vincent, May 04 '20 at 08:29
I follow almost every tutorials in yt and I've also researched here and it doesnt work. Help me. — John Vincent, May 04 '20 at 08:56
My laptop is lenovo, do I need also a lenovo phone to make it work? — John Vincent, May 04 '20 at 09:04
Try to change mac address as I've described in the answer and tell if it works or something goes wrong again. Try to explain steps you've tried in details by editing your answer. — Gryu, May 04 '20 at 09:19
I edited it and it shows above. Im sorry i dont know how to highlight but thats what it resulted after i inputed your instructions in terminal. — John Vincent, May 04 '20 at 12:05

score 0 · Answer 2 · answered May 04 '20 at 07:44

0

Follow these steps:

Go to Software and Updates.
Click the Additional Drivers tab.
Enable the appropriate wifi driver -> Something like this Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac, as mentioned in question.
Click Apply changes.

answered May 04 '20 at 07:44

Mansoor Ahmed Memon

170

Im not yet connected to internet, I tried usb tethering but it only says "Activation of network connection failed." How can i resolve this? – John Vincent May 04 '20 at 09:00
Use an external adapter temporarily or an Ethernet connection. – Mansoor Ahmed Memon May 04 '20 at 12:32
Also, Did you found your wifi card in the list. – Mansoor Ahmed Memon May 04 '20 at 12:33
I have hdmi and i dont have usb to ethernet adapter yet. How can I find my wifi card? – John Vincent May 04 '20 at 12:38
You need to check for your wifi card which is Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac in the Additional Drivers tab in the Software and Updates app. – Mansoor Ahmed Memon May 04 '20 at 12:42
This won't work without an internet connection. So, you will need an external card. – Mansoor Ahmed Memon May 04 '20 at 12:43
Also, run sudo apt update && sudo apt upgrade in the terminal before this. – Mansoor Ahmed Memon May 04 '20 at 12:44
I can't tether my cp's internet to my laptop. I guess I'll buy first an usb to ethernet adapter to connect my pc to internet and follow your instructions. Thankyou sir. – John Vincent May 04 '20 at 12:52

Help me to make my wifi work in lenovo ideapad 330s

2 Answers2