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I am new to linux and currently using Ubuntu Budgie(Dual Boot with windows 7). I am unable to use wifi. Have a look at the following Condition. Wifi Adapter model - "ZEB-USB300WF" Ubuntu Budgie version - 20.04.3 LTS. Kernel version -5.11.0-37-generic. Can anyone please check are the drivers for the usb adapter installed or not, as i tried installing the drivers once. Chipset is RTL8192EU.

Output of "lsusb" :

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 064e:c342 Suyin Corp. HP Truevision HD
Bus 001 Device 004: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 003: ID 0bda:818b Realtek Semiconductor Corp. RTL8192EU 802.11b/g/n WLAN Adapter
Bus 001 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Here RTL8192EU is my usb wifi adapter.

Output of "rfkill list all" :

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: phy1: Wireless LAN
    Soft blocked: no
    Hard blocked: yes

PS : I tried "rfkill unblock all" it doesnt work.

Output of "lshw -c network"

*-network DISABLED
       description: Wireless interface
       physical id: 1
       bus info: usb@1:2
       logical name: wlx1cbfceeb3cb3
       serial: 1c:bf:ce:eb:3c:b3
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192eu driverversion=5.11.0-37-generic multicast=yes wireless=unassociated

Output of "inxi -N":

Network:   Device-1: Ralink RT3290 Wireless 802.11n 1T/1R PCIe driver: rt2800pci 
           Device-2: Realtek RTL810xE PCI Express Fast Ethernet driver: r8169 
           Device-3: Realtek RTL8192EU 802.11b/g/n WLAN Adapter type: USB driver: rtl8192eu

Output of "iwconfig":

lo        no wireless extensions.

enp4s0    no wireless extensions.


wlp2s0f0  IEEE 802.11  ESSID:off/any

      Mode:Managed  Access Point: Not-Associated   Tx-Power=off

      Retry short  long limit:2   RTS thr:off   Fragment thr:off
      Power Management:off


wlx1cbfceeb3cb3  unassociated  Nickname:"<WIFI@REALTEK>"
      Mode:Managed  Frequency=2.412 GHz  Access Point: Not- 
Associated

      Sensitivity:0/0

      Retry:off   RTS thr:off   Fragment thr:off
      Power Management:off
      Link Quality=0/100  Signal level=0 dBm  Noise level=0 dBm
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Output of "lsmod | grep 8192eu":

8192eu               1351680  0
cfg80211              888832  3 8192eu,rt2x00lib,mac80211

This is the condition when the Usb adapter is not plugged, I am unable to off Airplane mode at this stage.

This is the condition when I plugged the usb wifi adapter.

Please help me to access wifi using usb wifi adapter.

Manish Vaishnav
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1 Answers1

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Finally the problem is solved. My Usb wifi Adapter was hard blocked by internal wifi card. I was able to fix this with the help of this article. Wifi Dongle hard blocked by wifi card

For removing module of the internal wifi adapter do the following

Get the kernel driver name by running

lspci -nnk | grep -iA2 net

Take the name in the line "Kernel driver in use:". Make sure that it is the correct device (the wifi card and not e.g. the ethernet card). In my case it was rt2800pci.

Then either remove it for testing temporarily using

sudo modprobe -r rt2800pci

or permanentely by adding it to the blacklist

sudo vi /etc/modprobe.d/blacklist.conf
Manish Vaishnav
  • 41