Debian
My /etc/apt/sources.list
# bullseye is 'next-stable'
deb https://mirrors.edge.kernel.org/debian/ bullseye main contrib non-free
deb-src https://mirrors.edge.kernel.org/debian/ bullseye main contrib non-free
deb https://mirrors.dotsrc.org/debian-security bullseye-security main contrib non-free
deb-src https://mirrors.dotsrc.org/debian-security bullseye-security main contrib non-free
# Add 'bullseye-updates' (recommended updates) and 'bullseye-backports' after bullseye is current 'stable'
# Zotero
deb https://github.com/retorquere/zotero-deb/releases/download/apt-get/ ./
# linux-surface on GitHub\
# deb [arch=amd64] https://pkg.surfacelinux.com/debian release main
Live images with proprietary firmware!