Bug#868332: nvidia-legacy-check aborts during apt-get dist-upgrade

[Thomas Loimer]

Package: nvidia-legacy-check
Version: 375.66-1

On upgrading from jessie to stretch, during apt-get dist-upgrade,
nvidia-legacy-check was installed, it correctly detected a legacy 
graphics card and correctly informed the user to install
nvidia-legacy-340xx-driver and nvidia-legacy-340xx-kernel-dkms (although 
the former depends on the latter). It finally asked whether the newer 
nvidia-driver should be installed. I said No, then the upgrade aborted, 
because nvidia-legacy-check returned an error.

I believe, regardless of the choice, nvidia-legacy-check should not 
error out, but let apt-get dist-upgrade continue.

It took some efforts to continue the upgrade, involving something like
apt-get purge nvidia-legacy-check, apt --fix-broken install, and
apt-get dist-upgrade. The system then booted into the console, where the 
legacy driver could be installed

Best regards,

Thomas