Bug 597320

Description of problem:

When I plug in my iPhone (via a USB cable), nothing seems to happen on the desktop.  No icon appears, no dialog boxes offer to launch gPhoto and Rhythmbox, etc.

Looking more closely, it seems that udev *does* detect the iPhone.  It runs the rules in "/lib/udev/rules.d/85-usbmuxd.rules", specifically by running the "/usr/sbin/usbmuxd -u -U usbmux" command.  However, this usbmuxd process exits immediately instead of staying around to manage communication with the iPhone.

If I run "/usr/sbin/usbmuxd -u -U usbmux" manually, as root, it also exits immediately and suggests looking in the system log.  In "/var/log/messages" I see "usbmuxd[...]: [0] Dropping privileges failed, check if user 'usbmux' exists!"

Checking "/etc/passwd" shows that user "usbmux" does not exist.  There is, however, a user "usbmuxd", created by the preinstall scriptlet for the usbmuxd rpm.  So it seems that the wrong user name is being used.  Either the usbmuxd daemon should be trying to drop privileges down to user "usbmuxd" instead of "usbmux", or the usbmuxd rpm preinstall scriptlet should be creating a user named "usbmux" instead of "usbmuxd".

Indeed, if I manually rename user "usbmuxd" to "usbmux", then everything else works fine: plugging in an iPhone yields a desktop icon, helpful dialog boxes, etc.  So it's pretty clear that the core of the problem is a simple mismatch between the user names being created and used.  Should be an easy fix!

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