I have the same problem and just tested with the latest mainline kernel [0]. The problem wasn't fixed.
I also tried different propietary driver versions (I am using fglrx) and the open source radeon driver, both of which showed the same wrong behaviour. I think I should be able to fix the problem by just forcing a mode with a manually written xorg.conf and will try that later. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc7-saucy/ ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1197902 Title: Display corruption on 29" 2560x1080 monitor Status in “linux” package in Ubuntu: Confirmed Bug description: I have a 29" monitor that supports a native resolution of 2560x1080. Using the nouveau driver with kernel mode setting correctly set the resolution of the display, as indicated in the gnome-control-center -> display configuration utility, but the display appears to running at a much lower apparent resolution. Text is almost unreadable, everything appears incredibly "fuzzy". I attempted to use the proprietary nvidia drivers, and after using the nvidia-xconfig utility to generate a xorg.conf file and restarting the machine it is indeed using the proprietary driver and hardware acceleration is working, but the fuzzy condition persists. I am using Ubuntu 13.04, I have updated all the packages. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1197902/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp