This looks related, were you trying to look at an iso? It sounds a bit like you were trying to look at an ISO which got loop-mounted, then tracker jumped at it, and tried to unmount it again?
Feb 14 22:39:23 duhast gnome-session[6392]: (tracker-extract:6756): libmediaart-WARNING **: Unmount operation failed, adding back mount point... Feb 14 22:39:23 duhast gnome-session[6392]: (tracker-miner-fs:6797): Tracker-WARNING **: Unmount operation failed, adding back mount point... Feb 14 22:39:23 duhast gnome-session[6392]: (tracker-extract:6756): Tracker-WARNING **: Unmount operation failed, adding back mount point... Feb 14 22:39:49 duhast polkitd(authority=local)[1227]: Operator of unix-session:c2 FAILED to authenticate to gain authorization for action org.freedesktop.udisks2.filesystem-unmount-others for system-bus-name::1.70 [/usr/lib/gvfs/gvfs-udisks2-volume-monitor] (owned by unix-user:darkness) ** Package changed: systemd (Ubuntu) => tracker (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1421938 Title: asked for permission to unmount partition while extracting file with file-roller To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tracker/+bug/1421938/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs