Comment 26 for bug 378794

To help upstream it would be useful if you could try the newer versions of the -intel driver components available in the xorg-edgers PPA here: https://edge.launchpad.net/~xorg-edgers/+archive/ppa

That PPA contains an up to date snapshot of all the relevant driver components. If you still see that problem with the packages from the xorg-egders PPA, could you please run “apport-collect 378794”, which will collect all sorts of interesting logs.