Ok, I just upgraded from Yakkety dev to Yakkety, everything works fine, I don't know what this warning was about but the graphic driver seems to work well so I suppose this bug could marked as solved or something.
Ok, I just upgraded from Yakkety dev to Yakkety, everything works fine, I don't know what this warning was about but the graphic driver seems to work well so I suppose this bug could marked as solved or something.