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Wifi mysteriously stopped working???

Posted: 2020/02/13 06:30:21
by justindwalker87
Hello, I am new to linux and recently got a wifi adapter. The internet was working just fine last time I used CentOS. Now it is not recognizing my wifi adapter. Is there something I can do?

Re: Wifi mysteriously stopped working???

Posted: 2020/02/13 06:35:19
by justindwalker87
ubuntu recognizes it just fine

Re: Wifi mysteriously stopped working???

Posted: 2020/02/14 14:13:26
by hunter86_bg
Ia it a usb pluggable dongle or a pci-based one?
Run either:

Code: Select all

lsusb -vvv
or

Code: Select all

lspci -vvv

Re: Wifi mysteriously stopped working???

Posted: 2020/02/14 14:28:22
by TrevorH
Did you have to do anything to make it work in the first place? Did you then run yum update (dnf update) and install a newer kernel?

Re: Wifi mysteriously stopped working???

Posted: 2020/02/15 13:27:31
by justindwalker87
hunter86_bg wrote:
2020/02/14 14:13:26
Ia it a usb pluggable dongle or a pci-based one?
Run either:

Code: Select all

lsusb -vvv
or

Code: Select all

lspci -vvv
Pluggable usb, tried the lsusb -vvv and no wifi adapter found

Re: Wifi mysteriously stopped working???

Posted: 2020/02/15 13:28:07
by justindwalker87
TrevorH wrote:
2020/02/14 14:28:22
Did you have to do anything to make it work in the first place? Did you then run yum update (dnf update) and install a newer kernel?
I had to install the Oracle Virtual Box extensions to get it to work originally

Re: Wifi mysteriously stopped working???

Posted: 2020/02/15 13:29:20
by justindwalker87
TrevorH, thank you sincerely for your answers and patience! You're helping me start a career change

Re: Wifi mysteriously stopped working???

Posted: 2020/02/15 14:19:14
by TrevorH
Right, so those are built against the running kernel and if you do a kernel update (which you should do when yum update offers one for you) then those will need to be reinstalled and rebuilt against the new kernel.

It's also an unusual way to use a wifi adapter, normally they're used on the host machine and then that network is shared by the host with all the guests. That then appears as a wired interface to the guest and uses one of the drivers that's supplied as part of the kernel and nothing needs rebuilding.

Re: Wifi mysteriously stopped working???

Posted: 2020/02/16 01:55:17
by justindwalker87
Is there a command I need to type in? Or is it something I should download for virtual box? Any reason why it might not be running the normal way which you mentioned?

Re: Wifi mysteriously stopped working???

Posted: 2020/02/16 02:02:28
by TrevorH
Is it actually showing as a wireless adapter in your virtualbox VM? As I say, normally you install a wireless adapter on the host operating system and then virtualbox gives the guest what appears to it to be a wired connection. Is that not how you had it set up before?