Arduino Micro: /dev/ttyACM0 disappear after few second

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hi all,

i have  proble arduino micro board on linux. when plug laptop, device /dev/ttyacm0 registered correctly, , dmesg:

quote
[  720.653221] cdc_acm 2-1.2:1.0: usb_probe_interface
[  720.653225] cdc_acm 2-1.2:1.0: usb_probe_interface - got id
[  720.653237] cdc_acm 2-1.2:1.0: ttyacm0: usb acm device
[  720.654151] usb 2-1.2: adding 2-1.2:1.1 (config #1, interface 1)


but after few seconds /dev/ttyacm0 device disappear, , got on dmesg is:
quote
[  728.316212] usb 2-1.2: usb disconnect, device number 11
[  728.316217] usb 2-1.2: unregistering device
[  728.316223] usb 2-1.2: unregistering interface 2-1.2:1.0
[  728.316382] usb 2-1.2: unregistering interface 2-1.2:1.1
[  728.316423] usb 2-1.2: usb_disable_device nuking urbs
[  728.420514] hub 2-1:1.0: debounce: port 2: total 100ms stable 100ms status 0x10



any idea?
the other board arduino uno working have problem micro board.

it seems have same problem on windows (a least when plug micro board heard ta-da sound of plugged device, , few seconds later, heard te-de sound of unplugged device :) )

and serial monitor works few seconds... (so suppose same happens on linux)


Arduino Forum > Using Arduino > Installation & Troubleshooting > Arduino Micro: /dev/ttyACM0 disappear after few second


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