beagleboneblack HDMI不能显示

beagleboneblack  接上HDMI到电视上，没有显示画面

看了资料之后才知道

http://elinux.org/Beagleboard:BeagleBoneBlack_HDMI#Connecting_to_a_TV_or_Display

 

1) Do not connect the Ethernet cable to the board.

2) Do not connect the HDMI cable to the board.

3) Apply power to your board.

4) Wait for the board to power up. This should take about 2 minutes.

5) Then connect the cable to your board.

6) Connect the cable to the TV/Display.

 

需要beaglebonebalck开机一段时间之后再插到板上才可以