agpmode and modeset are not even remotely related I'm afraid. With 4.3 onward one should be using nouveau.config="NvAGP=0" as documented [1]
[1] http://nouveau.freedesktop.org/wiki/KernelModuleParameters/#config -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/653714 Title: Garbage on X display w/ Dell D800 wuxga & nouveau driver (Nvidia GeForce4 Ti 4200 Go AGP rev a1 [NV28]) To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/653714/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs