https://bugs.kde.org/show_bug.cgi?id=396526

            Bug ID: 396526
           Summary: Unable to mount a device when another user is logged
                    in.
           Product: plasmashell
           Version: 5.13.2
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Device Notifier
          Assignee: plasma-b...@kde.org
          Reporter: alpine.art...@googlemail.com
  Target Milestone: 1.0

user1 logged in at TTY1 with plasma session. Then user2 logs in on TTY2 (via
action "change user" - user2 also on plasma). I then change to user1 and insert
a USB device (sd card reader in this case). Trying to "open with file manager"
just shows a spinning icon. user2 gets a notification that it requires the root
password to mount the device. If I cancel that passwd-dialog it appears for
user1 (that initially triggered the mount request). If I then cancel it also
for user1 it seems I can access it without any issue - no further passwd-dialog
is shown.
If I enter the password from within user2's session only user2 can access the
mounted device, user1 receives the message "file or folder
/run/media/user2/DEVICENAME does not exist" - Of course it exists but user1
doesn't have sufficient rights.

In my opinion if user1 inserts a device and requests access to the content it
should be granted also if other users are logged in.
Furthermore the errormessage should show the correct message ("not sufficient
rights" instead of "does not exist"). Giving the other users only read access
could be possible, too - but that is probably a security issue, though we are
talking of desktop machines - other users could just unplug that device as they
have physical access.

====

As I have the passwords for both users I can workaround this issue. For "real"
multi-user desktops the described behaviour of the device notifier makes it
impossible to work with external devices.

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