Sorry, it's issue from hardware connection. Now it works....

On Friday, October 30, 2015 at 11:41:39 AM UTC-4, Mian Tang wrote:
>
> I'm using BBB RevC, and the kernel version is 3.8.13-bone72. When BBB boot 
> up with eMMC, I disabled HDMI in /boo/uEnv.txt like below:
> ##Disable HDMI
> optargs=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN
>
> When I reboot the BBB, I cannot visit BBB through USB connection. The USB 
> connection is lost...
>
> Please tell me how to fix this issue. Thanks a lot.
>
>
>

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