Marc, please try now the kernel from http://people.canonical.com/~herton/lp814325/r4/
It reapplies the fix plus the change "drm/i915: DP_PIPE_ENABLED must check transcoder on CPT"
Marc, please try now the kernel from http:// people. canonical. com/~herton/ lp814325/ r4/
It reapplies the fix plus the change "drm/i915: DP_PIPE_ENABLED must check transcoder on CPT"