I wanted to make a hotspot and to solve a problem I ran the following command:
sudo apt install firmware-b43-installer
and rebooted the machine to see the effects, but I got a black screen, I can hear the drum sound prompting me to log in. I think the OS boots successfully but with a black screen. My ubuntu was 16.04, after this issue, I took that into recovery mode and upgraded it to 18.04, but the problem's not solved.
I read this thread and some other posts but they didn't help me. Also I set
nomodeset in Grub but I couldn't fix the main problem. So, my question is; how can I fix the black screen. I'm not very good at Linux.
Any suggestions are welcome and thank you in advance!