Ubuntu laptop suddenly does not recognize arduino (mega) anymore

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hello people, run strange today.

my arduino mega cannot seen ubuntu laptop. nothing in serial port when connect standard usb cable (tried different ones in case). :(

lsusb not see as used to.
dmesg not return different when plug , when unplug it. "vanished"! :/

it functional arduino, since when turned on it's supposed , more strangely enough, when use usb ttl converter, connect (serial1 being used functional apparently) can see serial port in ide, converter when lsusb.
i won't have arduino try connecting instead , see happens until tomorrow.
any clues on going wrong here?

apparently particular arduino mega not recognized in other computers either, while other arduinos work on mine.

considering works should , communicates through serial1 fine, think problem?!
serial0 , or usb connector fried?! (i haven't done in particular cause such damage)


Arduino Forum > Using Arduino > Installation & Troubleshooting > Ubuntu laptop suddenly does not recognize arduino (mega) anymore


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