[SOLVED] Wireless USB Adapter not detected

[Dribble3100]

Hello everyone,

I could not find a solution for this specific problem on the forums but sorry if it has been asked before.

Mint 20 64-bit does not detect a USB WiFi adapter that according to the packaging is supposed to work for Linux. Windows 10 picks it up straight away.

Model of adapter is NPEVO-AC600USB

Any help much appreciated.

[sleeper12]

With the adapter plugged in, post the results of:

Code: Select all

 lsusb 

Code: Select all

 inxi -Fxz 

[Dribble3100]

These are the results. Realtek Semiconductor Corp. 802.11ac NI is the adapter.

Linux.Mint:~$ lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 04ca:0064 Lite-On Technology Corp. Wireless Device
Bus 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:c811 Realtek Semiconductor Corp. 802.11ac NIC
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Linux.Mint:~$ inxi -Fxz
System:
Kernel: 5.4.0-40-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Cinnamon 4.6.6 Distro: Linux Mint 20 Ulyana
base: Ubuntu 20.04 focal
Machine:
Type: Desktop Mobo: Micro-Star model: B450M MORTAR MAX (MS-7B89) v: 1.0
serial: <filter> UEFI: American Megatrends v: 2.60 date: 12/30/2019
CPU:
Topology: 6-Core model: AMD Ryzen 5 2600 bits: 64 type: MT MCP arch: Zen+
rev: 2 L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
bogomips: 81588
Speed: 1375 MHz min/max: 1550/3400 MHz Core speeds (MHz): 1: 1376 2: 1377
3: 1269 4: 2597 5: 1377 6: 1268 7: 1269 8: 2343 9: 1374 10: 1373 11: 1371
12: 1272
Graphics:
Device-1: NVIDIA GM206 [GeForce GTX 950] vendor: ZOTAC driver: nvidia
v: 440.100 bus ID: 26:00.0
Display: x11 server: X.Org 1.20.8 driver: nvidia
unloaded: fbdev,modesetting,nouveau,vesa resolution: 1920x1080~60Hz
OpenGL: renderer: GeForce GTX 950/PCIe/SSE2 v: 4.6.0 NVIDIA 440.100
direct render: Yes
Audio:
Device-1: NVIDIA GM206 High Definition Audio vendor: ZOTAC
driver: snd_hda_intel v: kernel bus ID: 26:00.1
Device-2: AMD Family 17h HD Audio vendor: Micro-Star MSI
driver: snd_hda_intel v: kernel bus ID: 28:00.3
Sound Server: ALSA v: k5.4.0-40-generic
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Micro-Star MSI driver: r8169 v: kernel port: f000 bus ID: 22:00.0
IF: enp34s0 state: down mac: <filter>
Device-2: Realtek 802.11ac NIC type: USB driver: usb-network bus ID: 1-8:2
Drives:
Local Storage: total: 704.24 GiB used: 18.36 GiB (2.6%)
ID-1: /dev/nvme0n1 vendor: Western Digital
model: PC SN720 SDAPNTW-256G-1006 size: 238.47 GiB
ID-2: /dev/sda vendor: Western Digital model: WD5000LPVX-75V0TT0
size: 465.76 GiB
Partition:
ID-1: / size: 166.45 GiB used: 18.33 GiB (11.0%) fs: ext4
dev: /dev/nvme0n1p5
Sensors:
System Temperatures: cpu: 34.0 C mobo: N/A gpu: nvidia temp: 32 C
Fan Speeds (RPM): N/A gpu: nvidia fan: 0%
Info:
Processes: 274 Uptime: 9m Memory: 15.65 GiB used: 921.3 MiB (5.7%)
Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.16
inxi: 3.0.38

[sleeper12]

Try this, one line at a time:

Code: Select all

sudo apt update
sudo apt install build-essential git dkms
git clone https://github.com/brektrou/rtl8821CU.git
cd rtl8821CU
chmod +x dkms-install.sh
sudo ./dkms-install.sh
sudo modprobe 8821cu 

Reboot

[Dribble3100]

Problem solved!

Thanks very much for your help.

[sleeper12]

Great, glad that worked for you.

[polloco2009]

GREAT!!!! Funtion whit not problem! thanks

[mortal]

Great, glad that worked for you.

this method didnt worked for me can you sugget something else?
the post is old so i will post specs after you reply

[sleeper12]

Great, glad that worked for you.

this method didnt worked for me can you sugget something else?
the post is old so i will post specs after you reply

You'll get better help if you start your own thread & post your specs there.

[toastkey]

I had the same issue and this worked great for me, thanks!

[brookfield]

Many thanks - this solved the problem for me !!

[shmu]

Yes, this solution still works.

[janjan]

I just wanna say thank you for helping... still works for me

[espinozahg]

Dear all. I wanted to ask about the protocols this driver activates. I mean. Does it work at 5GHz wifi ac?

[hglee]

Dear all. I wanted to ask about the protocols this driver activates. I mean. Does it work at 5GHz wifi ac?

The Realtek RTL8821CU supports 2.4/5GHz dual-band 802.11ac 1x1 (1T1R) baseband Wireless LAN with Multi-User MIMO, plus Bluetooth 4.2.

Its host system interface is USB 2.0.

[juniorosilva]

I have the same issue, worked for me !!! Thanks a lot

[bobrob4066]

Works!! Thx