This firmware cannot be included in the official release because it violates Debian's Social Contract and it will not be installed automatically even if the unofficial non-free ISO image is used.
To solve this problem disable the graphical desktop by pressing "e" with the Debian boot menu entry highlighted and add this to the end of the line that starts with "linux":
- Code: Select all
systemd.unit=multi-user.target
Then press <ctrl>+x (at the same time) to boot the modified entry and install the non-free firmware metapackage:
- Code: Select all
# apt install firmware-linux-nonfree
If the official ISO image has been used to install the system then the non-free component of the repsoitories will have to be added first, use
- Code: Select all
# apt edit-sources
And add non-free after main in the source lines (separated with a space) then save the file and
- Code: Select all
# apt update
Before installing the firmware metapackage and rebooting.
See also https://wiki.debian.org/SourcesList#Component & https://wiki.debian.org/Firmware