Problem to connect BBB via USB device

I have problem to connect BBB to my laptop via USB recently (it was work before). It doesn’t even shown up in the dmesg from my laptop, nor lsusb. I also tried to use another computer and i just got the same. But it still work if using ssh. What should i do first to troubleshoot the problem ? i tried to google but what i get is problem with USB host, not the USB device.

i’m using Beaglebone Black version A5B, with standard Amstrong distribution whip the board (never upgrade before).

Thanks in advance

It is possibly that the eMMC has an issue. I suggest you reflash the SW with the latest version. There have been a lot of changes lately.