I found a workaround that works for me. This only works for nvidia-cards. The problem I appear to have is also discussed here for 10.04: http://ubuntuforums.org/showthread.php?t=1476693.
The problem for nvidia in my case is the 'PowerMizer' feature that is found on laptops using nvidia-drivers. It dynamically underclocks the GPU when it's not being used much, and this caused the flickering in my case. The workaround I have found so far was to follow what was suggested here: http://ubuntuforums.org/showthread.php?t=828369&highlight=powermizer Basically I run this script in the background, forcing my 'Performance Level' to be fixed at 1. #!/bin/bash while true; do nice /usr/bin/nvidia-settings -q all &> /dev/null sleep 25 done Ugly, but it works :) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/875504 Title: terrible screen flicker in 11.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/875504/+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