[RESOLVED] Wifi Stopped Working After Reboot

N3k0-san · 2022-04-19 03:10:20

So... I managed to break my wifi detection somehow

It was working fine earlier; I rebooted from Arch to Windows, then powered off, then turned on to Arch and then couldn't detect any wifi signals anymore
(I use NetworkManager with dnsmasq; I've checked the Arch wiki but I can't figure out how to fix it to save my life)

In order of events that occurred leading up to the problem:
1) Mounted an ntfs3 drive via KDE's Dolphin
2) Moved some files to it (it was a Windows drive)
3) When I was done, I didn't unmount, I just ran "reboot"
4) Booted into that Windows drive
5) Did some stuff
6) Powered off
7) Powered on into the Arch drive (the default-selected drive)
8) Booted into the kernel but didn't reach SDDM for some reason (the screen was black)
9) Pressed the reboot button
10) Booted back in and logged in
11) Wasn't connected to wifi for some reason and couldn't detect any signals at all (not even my neighbors' were detectable)
12) Remounting that Windows drive makes it read-only for some reason

All I've been able to gather, after making sure NetworkManager was properly configured to communicate with dnsmasq and making sure systemd dhcp services were disabled to prevent from interfering, is that the "lo" device is set to "unmanaged" for some reason (I've seen this device before but have never known what it was; additionally, I don't recall it looking like this):

lo: unmanaged
        "lo"
        loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536

With that information, I've resorted to using ethernet for the time being, but I bought a motherboard with wifi because I needed wifi, so this is a problem for me.
Would anyone be able to help me figure out how to fix this?

Last edited by N3k0-san (2022-04-19 16:39:08)

seth · 2022-04-19 06:23:47

Windows is hibernating (and occupying the NIC), see 3rd link below or you updated the kernel, forgot to mount the /boot partition and now run an old kernel w/o modules (compare "uname -a" to "pacman -Qs linux")

N3k0-san · 2022-04-19 16:38:26

Ah, I see; it was Windows
Thanks, I hadn't realized it could do that

Arch Linux

#1 2022-04-19 03:10:20

[RESOLVED] Wifi Stopped Working After Reboot

#2 2022-04-19 06:23:47

Re: [RESOLVED] Wifi Stopped Working After Reboot

#3 2022-04-19 16:38:26

Re: [RESOLVED] Wifi Stopped Working After Reboot

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