Hi Ben, still _assuming_ it's an issue of the card I thought about why it works with the NVIDIA binary driver. And I can image they're just trying to do an identity-mapping first and if that doesn't work (e.g. the particular SOR is already in use by another macro link) they just pick the next suitable one. So the case would be that the NVIDIA binary driver always assignes the only working mapping (SOR-1 <-> macro link D) on a Gainward GTX 1070. Therefore, if this is the case, maybe it is better to change the routing strategy to prefer a SOR which maps the identity of the particular macro link over a random one instead of having my orignally proposed quirk. So here's the patch doing exactly that. Regards, Danilo Danilo Krummrich (1): drm/nouveau/disp: prefer identity-mapped route of SOR <-> macro link drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c | 38 +++++++++++++++++-------- 1 file changed, 26 insertions(+), 12 deletions(-) -- 2.14.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel