Bug#922679: Locking screen with light-locker/nvidia-driver crashes system to blinking cursor

[nodiscc]

Hi,
did you have some time to have a look at this?

I encountered a minor problem when using 'update-glx glx'
(https://packages.debian.org/sid/update-glx package), which updates
the glx alternative but does not remove the nvidia entry from
xorg.conf

I still think it would be good to have automatically generated (maybe
make it optional through a debconf dialog?).

@anbe, ping