Debian WiFi Issue
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 Solution (Source) 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 grub-mkconfig Now just reboot