> The only thing I have not been able to diagnose is that everytime I > install firmware-misc-nonfree I loose wifi. So I guess there is a low > level interference in between firmware-misc-nonfree and > firmware-b43-installer.
I cannot reproduce this since update to 4.9.0-3-amd64. dmesg reveal two new lines: +[ 0.000000] Base memory trampoline at [ffff8ed5c0099000] 99000 size 24576 +[ 0.000000] BRK [0x79f2e000, 0x79f2efff] PGTABLE Maybe this is related. Anyway wifi is working with package installed: % apt-cache policy firmware-misc-nonfree firmware-misc-nonfree: Installed: 20161130-2 Candidate: 20161130-2 Version table: *** 20161130-2 500 500 http://ftp.fr.debian.org/debian stretch/non-free amd64 Packages 100 /var/lib/dpkg/status