using the "39-usbmuxd.rules" file from cosmic
(usbmux-1.1.1~git20180428.b95a0a0-1) solves the problem.
Debian bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891507
** Bug watch added: Debian Bug tracker #891507
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891507
** Also
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: usbmuxd (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1778767
Title:
The attachment "add +RUN directive to rule" seems to be a patch. If it
isn't, please remove the "patch" flag from the attachment, remove the
"patch" tag, and if you are a member of the ~ubuntu-reviewers,
unsubscribe the team.
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