Doing a suspend to RAM restores the original trashing behaviour. I'm not sure, but maybe the screen update is slower as well now.
This is a Dell D800: 01:00.0 VGA compatible controller: NVIDIA Corporation NV28M [GeForce4 Ti 4200 Go AGP 8x] (rev a1) X.Org X Server 1.15.1 Release Date: 2014-04-13 [ 263.867] X Protocol Version 11, Revision 0 [ 263.867] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian [ 263.867] Current Operating System: Linux dell 3.13-1-686-pae #1 SMP Debian 3.13.7-1 (2014-03-25) i686 [ 263.867] Kernel command line: BOOT_IMAGE=/vmlinuz-3.13-1-686-pae-mine2 root=/dev/mapper/root ro processor.ignore_ppc=1 quiet [ 263.867] Build Date: 15 April 2014 07:46:36PM [ 263.867] xorg-server 2:1.15.1-1 (http://www.debian.org/support) [ 263.873] (II) NOUVEAU driver Date: Thu Nov 7 14:56:48 2013 +1000 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in 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 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp