Probably the descriptions are a little obsolete, or otherwise gloss over the technical details the end users wont understand.
nautilus has never managed the automounts afaik, the automount helpers (i.e the auto-run actions) did live in nautilus in GNOME2, moved to gnome-settings-daemon in 3.0 and these days live within gnome-shell (Since 3.12 or something). My best guess (and its only that causesince I could never reliably reproduce this bug and poke around with gdb), is that somehow a stale volume ends up stored (possibly due to unclean ejection of cd or just a plain leak) within the volume monitor, there is an update_mounts function in gvfs that is probably triggered by the insertion of the new CD and gvfs/GIO run through this an mount that old leaked volume. Of course it could also be a race or any other number of things, however I don't think its the filemanagers, they are just doing what they are told by the lower level software. I just don't have time to dig into this, especially when I can't reproduce. Now if you were to poke into the GIO volume monitor, you could possibly confirm that, however afaik there is no easy way to do that other than writing code. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1069964 Title: Two processes attempt to mount blank optical discs Status in OEM Priority Project: New Status in glib2.0 package in Ubuntu: Confirmed Status in unity-settings-daemon package in Ubuntu: Confirmed Bug description: This behavior can be reproduced using either a live USB or an installed version of the effected flavors. Simply insert a blank optical disc in the drive. The behavior differs slightly in Ubuntu GNOME as the notification to either Open with CD/DVD Creator or Eject is displayed twice - that is after simply clicking on the X to close that notification it closes but a new duplicate notification appaers immediately. The GNOME Classic session is not effected at all. In all other effected flavors and/or desktop environments a notification appears stating "Unable to mount Blank disc. Location is already mounted". Effected flavors and DE's include Ubuntu w/Unity, gnome-session-flashback, and Ubuntu MATE. Versions effected include Trusty, Utopic, and Vivid. I assume that two separate processes are actually attempting to mount the blank optical media, rather than just the file manager attemting to do so, because both Nautilus and Caja are effected (based on some of the comments below possibly also Nemo). While purely cosmetic in nature I'd certainly be willing to try and troubleshoot this if someone more tech savvy would provide some debugging instructions. Original content begins below: This error message comes up, while still able to burn, read/write etc. It occurs in quantal when inserting a CD/DVD into the drive, but it did not happen in precice. Screenshot: http://i47.tinypic.com/4v0aj6.png Burner: LG HL-DT-ST DVDRAM GH24NS90 ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: gnome-settings-daemon 3.4.2-0ubuntu14 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.6.1-0ubuntu3 Architecture: amd64 Date: Mon Oct 22 19:50:35 2012 ExecutablePath: /usr/lib/gnome-settings-daemon/gnome-fallback-mount-helper InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-settings-daemon UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1069964/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
