I have the same problem on Ubuntu 16.04 in kernel 4.13.0-21.
|[drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]] *ERROR* [CRTC:35:pipe B] flip_done timed out
I used `video=SVIDEO-1:d` kernel parameter as a workaround.
I have the same problem on Ubuntu 16.04 in kernel 4.13.0-21.
|[drm:drm_ atomic_ helper_ commit_ cleanup_ done [drm_kms_helper]] *ERROR* [CRTC:35:pipe B] flip_done timed out
I used `video=SVIDEO-1:d` kernel parameter as a workaround.