Wifi adapter doesn't show up

[MayorDimsdale]

I am running Manjaro on a dual boot with windows 11. I just installed it today. The wifi was giving some problems. It connected for a few seconds and quickly disconnected, I could not get the connection back up again. I searched for solutions and stumbled upon this
sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/deault-wifi-powersave-on.conf

but when I typed it in I typed

sudo sed -i 's/3/2' /etc/NetworkManager/conf.d/deault-wifi-powersave-on.conf

a missing forward slash. When I rebooted the wifi button to connect to wifi networks wasnt even there, even when I booted to my windows 11 the wifi button wasn't there. Its like the wifi adapter is non existent. Please help

 

[MayorDimsdale]

I have found that often wifi disconects are cause by Network Manager power save function.
You can try disabling it this way.
In terminal copy and paste this command.

sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

try it for awhile that way. see if the disconnects stop. If not you can reverse the process by changing the command to read

sudo sed -i 's/wifi.powersave = 2/wifi.powersave = 3/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Good luck.

I accidentelly entered the command

sudo sed -i 's/3/2' /etc/NetworkManager/default-wifi-powersave-on.conf

now my system doesnt detect my wireless network adapter at all like I don't even see a wifi button

 

[f33dm3bits]

I accidentelly entered the command
sudo sed -i 's/3/2' /etc/NetworkManager/default-wifi-powersave-on.confnow my system doesnt detect my wireless network adapter at all like I don't even see a wifi button

I corrected your CODE tags because it was unreadable with the CODE tags not being done correctly. What distribution are you using?

That basically tells it to replace the 3 with a 2 in that file. Can you share what that file looks like now?

cat /etc/NetworkManager/default-wifi-powersave-on.conf

 

[MayorDimsdale]

It was gone after I rebooted, but I thought creating a new one would fix the problem so I put what anothor user got after they ran theirs into that file. Which was:
[connection]
wifi.powersave=2

 

[f33dm3bits]

[connection]
wifi.powersave=2

Try changing that "2" back to a "3" without quotes. Then reboot and see if your wireless interface is detected again. If you share the output of "ip a" or/and "nmcli dev" it should list all your network interfaces available.

 

[Alexzee]

Sorry to hear you're having wifi issue's.

Is this a usb wifi dongle <or> the nic that came with your mobo (motherboard)?

Run this command please and post the output.

lspci | grep -i network

@dos2unix and @CaffeineAddict are good with the wifi, I am not.

 

[MayorDimsdale]

Try changing that "2" back to a "3" without quotes. Then reboot and see if your wireless interface is detected again. If you share the output of "ip a" or/and "nmcli dev" it should list all your network interfaces available.

No it did nothing. I dont know why but when I ran the sed command the default-wifi-powersave-on.conf file was not there after I rebooted and the wifi button with it. I tried creating a new file but it seems not to be working still

 

[f33dm3bits]

Give me a second. I'm going to merge the posts from that other topic into here. It's getting confusing.

 

[f33dm3bits]

Give me a second. I'm going to merge the posts from that other topic into here. It's getting confusing.

Okay I moved the replies from the other thread into your new one because it was getting confusing.

 

[f33dm3bits]

No it did nothing. I dont know why but when I ran the sed command the default-wifi-powersave-on.conf file was not there after I rebooted and the wifi button with it. I tried creating a new file but it seems not to be working still

What distribution are you using?

 

[Alexzee]

What distribution are you using?

Manjaro:-

 

[f33dm3bits]

Manjaro:-

Sorry I missed, that been multi-tasking.

 

[CaffeineAddict]

No it did nothing. I dont know why but when I ran the sed command the default-wifi-powersave-on.conf file was not there after I rebooted and the wifi button with it. I tried creating a new file but it seems not to be working still

Please restart these services one by one in order listed:

sudo systemctl restart wpa_supplicant
sudo systemctl restart NetworkManager

Then see if button comes back, or run ip link to list NIC's

 

[MayorDimsdale]

I have a laptop, but when I run the lspci | grep -i netwrok nothing shows up

Please restart these services one by one in order listed:

sudo systemctl restart wpa_supplicant
sudo systemctl restart NetworkManager

Then see if button comes back, or run ip link to list NIC's

 

[CaffeineAddict]

You mistyped wpa_supplicant it should be underscore, not dash.

 

[MayorDimsdale]

You mistyped wpa_supplicant it should be underscore, not dash.

Oh yeah sorry, still doesn't show up though

 

[CaffeineAddict]

I have a laptop

I think there must be a small button somewhere on your laptop that turns on wifi, it could be you turned it off.

when I run the lspci | grep -i netwrok nothing shows up

Please post output of both commands:

lsusb
lspci

 

[f33dm3bits]

Oh yeah sorry, still doesn't show up though

Can you run the following and share the output?

rfkill list

 

[MayorDimsdale]

All of this happened when I ran the sudo sed -i 's/3/2' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf and after I rebooted not even the windows wifi button showed. Plus its an hp laptop there is no wifi button

I think there must be a small button somewhere on your laptop that turns on wifi, it could be you turned it off.


Please post output of both commands:

lsusb
lspci

 

[CaffeineAddict]

Can you run the following and share the output?
rfkill list

Needs sudo btw. good one.

@Vintage62A
You have 3 commands to share output of, please run them and post.