What happened#
- I have faced this issue multiple times after installing debian
- Each time during installation WiFi worked but after that it didn’t, initially I thought that there was some issue of firmware
- But this time after installation wifi worked, but
nmcli device had a problem, it always showed that the device was unmanaged
- So I tried different things and finally was able to resolve the issue
- Just add the following line to your grub config (/etc/grub.d/10_linux)
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"
- After that generate grub config