slackern@nova:~/xf86-video-radeonhd/utils/conntest$ sudo ./rhd_conntest 2:00:0
Checking connectors on 0x7280, 0x18BC, 0x2870  (@02:00:00):
  Load Detection: RHD_OUTPUT_DACA
  HotPlug: RHD_HPD_1
  DDC: RHD_DDC_0
slackern@nova:~/xf86-video-radeonhd/utils/conntest$ sudo ./rhd_conntest 2:00:1
Unknown device: 0x1002:0x72A0 (02:00.01).
slackern@nova:~/xf86-video-radeonhd/utils/conntest$