Missing Realtek Firmware

No sound

Possible missing firmware /lib/firmware/rtl_nic/… If this alert occurs in your Debian, it can be quick solved by installing realtek-firmware package.

The message that appears on the screen is similar to this.

...
update-initramfs: Generating /boot/initrd.img-4.19.0-5-amd64
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8107e-2.fw for module r8169
...

Steps (Debian)

Check if your /etc/apt/sources.list includes below line.

deb http://httpredir.debian.org/debian/ buster main contrib non-free

If not, add above line using editor of your choice (nano/vim/kate) or just type below command in terminal.

# echo "deb http://httpredir.debian.org/debian/ buster main contrib non-free" | \
# tee -a /etc/apt/sources.list

Update the list of available packages and install non-free firmware-realtek package.

# apt update && apt install firmware-realtek

Alternative path for Ubuntu

There is no firmware-realtek package in Ubuntu. Instead, try to install linux-firmware or linux-firmware-nonfree.

References:

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