[FS#160] usb-serial with screen not working on dlink dir860l

[LEDE Bugs]

The following task has a new comment added:

FS#160 - usb-serial with screen not working on dlink dir860l
User who did this - Karl Palsson (karlp)

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Try with picocom, that looks like screen is trying to use utmp for locking or something?  Arguably a bug with screen.

   picocom -b 115200 /dev/ttyUSB0
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=160#comment419