From: Petter Reinholdtsen It is strange to watch how a bug in Debian causing KDM to fail to
-start at boot when an NVidia video card is used. The problem seem to
-be that the nvidia X.org driver uses a long time to initialize, and
-this duration is longer than kdm is configured to wait.
I came across two bugs related to this issue, #583312 initially filed @@ -18,7 +19,7 @@ kdm and passed on to src:nvidia-graphics-drivers for unknown reasons.
problem nvidia video card owners experience and make sure the Debian distribution work out of the box for these users. The nvidia driver maintainers expect kdm to be set up to wait longer, while kdm expect -the nvidia driver maintainers to fix the driver start faster, and +the nvidia driver maintainers to fix the driver to start faster, and while they wait for each other I guess the users end up switching to a distribution that work for them. I have no idea what the solution is, but I am pretty sure that waiting for each other is not it.