Jessie, gdm3 recently fails without composite (as well gnome3 with lightdm after login)

[Axel Kittenberger <axkibe@gmail.com>]

Hi!

I got a 3D-Setup here with an NVidea Quadro, and as NVidea says stereo and composite currently don't work together (thats bad by itself, but what can one do about it) and you have to disable Composite with
    Option         "Composite" "Disable"

in xorg.conf to get 3D stereo output.

This worked okayish (gnome goes into fallback mode) until todays jessie update. Now gdm3 greeter fails with:

gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256

** (process:2635): WARNING **: software acceleration check failed: Child process exited with code 1
----

I tried to replace it with lightdm, but that fails as well.

Against which package should i submit a bug report?

Right now I'll try to switch to kde to see if that can work without composite. Or do you have another suggestion for a window manager to use that will live happily without composite?

kind regards,
Axel