Cannot connect to wifi, wifi icon is also not shown in the systray

**linux-user-hp77** · May 23rd, 2021

System: Ubuntu 20.04
I have tried

Code:

sudo systemctl restart network-manager

but it didn't work. This issue is not new, previously when it used to happen, I did run that systemctl command and reboot and everything used to come back to normal.
I also tried to modprobe r8169 which is my ethernet driver, At this point I am confused that whether my ethernet controller is also responsible for my wifi or not, because I see no other mention of wireless controller or network controller.
Some of the screenshots that may help to understand my situation.

Output of different commands are given below

WhatsApp Image 2021-05-23 at 2.33.25 PM.jpg lspci-output.jpg lshw-output.jpg rfkill-output.png nmcli-d-output.png

Edit: After jeremy's help these are some other things that may let you know more about the config and all https://paste.ubuntu.com/p/M3FpSmpXDY/

I can also present any other detail as well, if required, please guide me how to overcome this issue.
Thanks

**praseodym** · May 23rd, 2021

Please show as well

Code:

lsusb
cat /sys/bus/sdio/devices/*
cat /sys/bus/sdio/devices/*/uevent

**linux-user-hp77** · May 24th, 2021

Output of lsusb:

Code:

Bus 001 Device 007: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 006: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 001 Device 005: ID 1bcf:2b8b Sunplus Innovation Technology Inc. 
Bus 001 Device 004: ID 1a2c:4c5e China Resource Semico Co., Ltd 
Bus 001 Device 003: ID 1bcf:08a0 Sunplus Innovation Technology Inc. 
Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 22d9:276a MediaTek CPH1723
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Output of cat /sys/bus/sdio/devices/*

Code:

cat: '/sys/bus/sdio/devices/*': No such file or directory

And same was for cat /sys/bus/sdio/devices/*/uevent

**jeremy31** · May 24th, 2021

You might need to see if Wifi is disabled in BIOS/ or reset BIOS to defaults and see if the wifi comes back

**linux-user-hp77** · May 24th, 2021

How to check that?

**walts48** · May 24th, 2021

I had that happen just this morning.

Pulled my Edimax wi-fi dongle out of the USB port, plugged it back in and there it was.

Sometimes I just restart the system, or if I'm really adventurous reboot the router, then restart the computer.

**linux-user-hp77** · May 24th, 2021

MIne is built in actually, there is nothing that I use externally.

**VMC** · May 24th, 2021

Code:

systemctl list-unit-files --state=enabled --no-pager

look for "wpa_supplicant.service". Also check network services

**linux-user-hp77** · May 25th, 2021

Originally Posted by VMC;1403984od9

look for "wpa_supplicant.service". Also check network services

Both are enabled.

**linux-user-hp77** · May 27th, 2021

Update:
I have reinstalled my OS, don't know couldn't figure out anything, and wifi icon is back, I think it was some driver issue with broadcom. I should have tried to install some drivers but nvm what's gone is gone