I have a chuwi herobook Pro laptop with Ubuntu 20.04.2 LTS installed. It has been working fine for months but last night the battery died unfortunately and now there is no WiFi connection.
The WiFi options simply did not appear in the top task bar or normal settings menu. By searching WiFi in applications I have found the WiFi setting but simply have a screen that says "no WiFi adapter found" with no options to change anything.
I can ping an receive proper response from local host.
Is it possible the battery dying turned wifi adapters off somehow to try and save power?
There is no ethernet port on the laptop so I cannot test with a cable.
I cannot find similar problems anywhere, since the WiFi adapters were all working fine up until this point when the laptop shot down due to no power.
Thank you
dit: thank you to everyone trying to help, its really appreciated. Here are my efforts to the suggestions:
1/ the guide asked me to run lshw - C network, this required suoer-user permission so I ran with sudo at he front of the command. The word 'usb' appeared temporarily before disappearing and returning me to normal command line. Not sure where to go from there.
However, from another guide I did get a list of adapters which I think was the aim and there was no relevant adapter in the list. I will try to find the exact command I used and edit again with the full results.
2/ the aeroplane toggle switch is not appearing where it should. The settings menu that usually had a section for WiFi is not there, but if I type WiFi into applications it takes me back to the settings screen and now has the WiFi tab, but unfortunately the screen has no interactivity just a message saying "no WiFi adapter found. Make sure you have a WiFi adapter plugged in and turned on". After your suggestion I tried two other commands: sudo rfkill block all and nmcli nm wifi off, but neither had any effect.
3/ the lspci - vvnn etc command (sorry for not typing out in full on mobile) didn't print anything to screen, it had no reaction when entered into terminal at all.
2 extra notes:
-it appears Bluetooth is also disabled, the settings menu still has the Bluetooth tab but simple says "no blue tooth found. Plug in a dingle to use Bluetooth" - the toggle in the top bar cannot be used. I have never used a dingle before or a external wireless adapter, it seems like these connectivity settings have been disabled somehow..
-I do have a Windows partition (but haven't booted windows for 2 months), on there the connectivity is also down and it appears to find no wireless adapters either.
Thank you