[Bug 1589997] [NEW] The device on /dev/sdx is not created when inserting new devices

[Joan]

Public bug reported:

I am on kubuntu xenial (upgraded from 15.10), from a couple of weeks I noticed that the pendrives i insert to my computer are detected but the devices under /dev are no longer created.
I if reboot the pc with the pendrive already plugged in it works without issues. I'm suspecting from udev because of this text in syslog (full output in the summary)

Jun  7 15:02:55 pc systemd-udevd[24747]: inotify_add_watch(9, /dev/sdb,
10) failed: No such file or directory

I'm up to date on all the packages
- linux-image-4.4.0-22-generic
- udev - 229-4ubuntu6

** Affects: udev (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1589997

Title:
  The device on /dev/sdx is not created when inserting new devices

Status in udev package in Ubuntu:
  New

Bug description:
  I am on kubuntu xenial (upgraded from 15.10), from a couple of weeks I noticed that the pendrives i insert to my computer are detected but the devices under /dev are no longer created.
  I if reboot the pc with the pendrive already plugged in it works without issues. I'm suspecting from udev because of this text in syslog (full output in the summary)

  Jun  7 15:02:55 pc systemd-udevd[24747]: inotify_add_watch(9,
  /dev/sdb, 10) failed: No such file or directory

  I'm up to date on all the packages
  - linux-image-4.4.0-22-generic
  - udev - 229-4ubuntu6

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