old_contents: #!/usr/bin/python3
  
  import pykms
  
  # draw test pattern via dmabuf?
  dmabuf = False
  
  # Use omap?
  omap = False
  
  if omap:
  	card = pykms.OmapCard()
  else:
  	card = pykms.Card()
  
  res = pykms.ResourceManager(card)
  conn = res.reserve_connector()
  crtc = res.reserve_crtc(conn)
  mode = conn.get_default_mode()
  
  if omap:
  	origfb = pykms.OmapFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  else:
  	origfb = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  
  if dmabuf:
  	fb = pykms.ExtFramebuffer(card, origfb.width, origfb.height, origfb.format,
  		[origfb.fd(0)], [origfb.stride(0)], [origfb.offset(0)])
  else:
  	fb = origfb
  
  pykms.draw_test_pattern(fb);
  
  crtc.set_mode(conn, fb, mode)
  
  input("press enter to exit\n")
  
new_contents: #!/usr/bin/python3
  
  import sys
  import pykms
  
  # draw test pattern via dmabuf?
  dmabuf = False
  
  # Use omap?
  omap = False
  
  if omap:
  	card = pykms.OmapCard()
  else:
  	card = pykms.Card()
  
  if len(sys.argv) > 1:
      conn_name = sys.argv[1]
  else:
      conn_name = ""
  
  res = pykms.ResourceManager(card)
  conn = res.reserve_connector(conn_name)
  crtc = res.reserve_crtc(conn)
  plane = res.reserve_generic_plane(crtc)
  mode = conn.get_default_mode()
  modeb = mode.to_blob(card)
  
  if omap:
  	origfb = pykms.OmapFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  else:
  	origfb = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  
  if dmabuf:
  	fb = pykms.ExtFramebuffer(card, origfb.width, origfb.height, origfb.format,
  		[origfb.fd(0)], [origfb.stride(0)], [origfb.offset(0)])
  else:
  	fb = origfb
  
  pykms.draw_test_pattern(fb);
  
  card.disable_planes()
  
  req = pykms.AtomicReq(card)
  
  req.add(conn, "CRTC_ID", crtc.id)
  
  req.add(crtc, {"ACTIVE": 1,
  		"MODE_ID": modeb.id})
  
  req.add(plane, {"FB_ID": fb.id,
  		"CRTC_ID": crtc.id,
  		"SRC_X": 0 << 16,
  		"SRC_Y": 0 << 16,
  		"SRC_W": mode.hdisplay << 16,
  		"SRC_H": mode.vdisplay << 16,
  		"CRTC_X": 0,
  		"CRTC_Y": 0,
  		"CRTC_W": mode.hdisplay,
  		"CRTC_H": mode.vdisplay,
  		"zorder": 0})
  
  req.commit_sync(allow_modeset = True)
  
  input("press enter to exit\n")
  
subject: use atomic modesetting