Can you please test with the latest drm-intel-fixes git branch from http://cgit.freedesktop.org/~danvet/drm-intel/
If the issue persists please boot with drm.debug=0xe, reproduce the WARN and then attach the complete dmesg to this bug report.
Can you please test with the latest drm-intel-fixes git branch from http:// cgit.freedeskto p.org/~ danvet/ drm-intel/
If the issue persists please boot with drm.debug=0xe, reproduce the WARN and then attach the complete dmesg to this bug report.