Hi, Commit 62b695662a24 ("drm/i915: Only enable DDI IO power domains after enabling DPLL") seems to have broken MST. Here's an untested fix (I don't have the right hardware to test this at the moment). Thanks, Ander Ander Conselvan de Oliveira (2): drm/i915: Enable DDI IO power domains in the DP MST path drm/i915: Remove duplicate DDI enabling logic from MST path drivers/gpu/drm/i915/intel_ddi.c | 2 ++ drivers/gpu/drm/i915/intel_dp_mst.c | 20 +++----------------- 2 files changed, 5 insertions(+), 17 deletions(-) -- 2.9.3 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx