There was a fix for a similar (same?) problem on this hardware in the upstream 3.5 kernel, which is available in Ubuntu 12.10 "Quantal Quetzal". I also recall seeing a more recent fix for large displays in one of the 3.6-rc's upstream, so you might want to also try the 3.6.1 kernel available at http://kernel.ubuntu.com/~kernel-ppa/mainline/
Instructions oh how to install and remove the mainline kernels are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds
There was a fix for a similar (same?) problem on this hardware in the upstream 3.5 kernel, which is available in Ubuntu 12.10 "Quantal Quetzal". I also recall seeing a more recent fix for large displays in one of the 3.6-rc's upstream, so you might want to also try the 3.6.1 kernel available at http:// kernel. ubuntu. com/~kernel- ppa/mainline/ /wiki.ubuntu. com/Kernel/ MainlineBuilds
Instructions oh how to install and remove the mainline kernels are available at https:/