Wifi Unavailable

[nananbajun]

Hey, I'm currently running on 18.3 Cinammon. The problem of wifi recently appeared. So after I faced this problem, I updated my kernel to 4.15.0 -22. It still isn't fixed. I need some help.
I tried :

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rfkill unblock wifi

I did:

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inxi -nn

The result of inxi -nn is :

Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169
IF: eno1 state: down mac: 00:9c:02:92:7c:c6
Card-2: Ralink RT5390 Wireless 802.11n 1T/1R PCIe driver: rt2800pci
IF: wlo1 state: down mac: c0:18:85:86:16:ae

Now some help on how to fix this problem would be great. Thanks.

[JeremyB]

See the wireless script link in my signature and post results

[nananbajun]

Result from the first command :

Results saved in "/home/saranyo/wireless-info.txt".

Results also archived in "/home/saranyo/wireless-info.tar.gz", as they exceed the 19.5 kB size limit for ".txt" attachments on the Ubuntu Forums.

Result from the second command :

[JeremyB]

I would do

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sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*

Reboot and see if it works

[nananbajun]

Thank you so much. The problem is solved.

[nananbajun]

The wifi was working quite well. But again, the same issue is back. And even when I apply that command, it doesn't work anymore. Further help needed please.