(reassigning to -intel package, many similar issues have been identified in the driver)
It would be useful to know if this issue has already been solved upstream. There is a newer -intel package in the xorg-edgers PPA at https://launchpad.net/~xorg-edgers/+archive/ppa (you might need the libdrm2 package from the drm-snapshot source as well). Can you please test it? See https://wiki.ubuntu.com/XorgOnTheEdge for how to uninstall these afterwards.
You can also try Option "AccelMethod" "UXA" in your xorg.conf to see if it helps.
(reassigning to -intel package, many similar issues have been identified in the driver)
It would be useful to know if this issue has already been solved upstream. There is a newer -intel package in the xorg-edgers PPA at https:/ /launchpad. net/~xorg- edgers/ +archive/ ppa (you might need the libdrm2 package from the drm-snapshot source as well). Can you please test it? See https:/ /wiki.ubuntu. com/XorgOnTheEd ge for how to uninstall these afterwards.
You can also try Option "AccelMethod" "UXA" in your xorg.conf to see if it helps.