Some clues could be found in the dbus.log from .cache/upstart/
If you try to open the picture directly from the phone, it works
** (zeitgeist-fts:2161): WARNING **: Unable to get info on application://nautilus-autostart.desktop
** Message: transfer of DSC00015.JPG to /tmp/gvfsobexftp-tmp-8209MX started
** Message: filename: /手機記憶體/相簿/100MSDCF/DSC00015.JPG (DSC00015.JPG) copying to /tmp/gvfsobexftp-tmp-8209MX (retval 2)
Failed to download a file from mobile phone
** Message: transfer of DSC00013.JPG to /tmp/gvfsobexftp-tmp-EKAANX started
** Message: filename: /手機記憶體/相簿/100MSDCF/DSC00013.JPG (DSC00013.JPG) copying to /tmp/gvfsobexftp-tmp-EKAANX (retval 2)
** Message: ChangeCurrentFolderToRoot failed
** Message: transfer got cancelled
** Message: ChangeCurrentFolderToRoot failed
Successful to download a file from another laptop:
** Message: transfer of HiCOS Client v2.1.9.1u.zip to /tmp/gvfsobexftp-tmp-T5YONX started
** Message: filename: /HiCOS Client v2.1.9.1u.zip (HiCOS Client v2.1.9.1u.zip) copying to /tmp/gvfsobexftp-tmp-T5YONX (retval 2)
Successful to upload a file to the mobile phone
** Message: transfer of Screenshot.png to /home/ubuntu/Pictures/Screenshot.png started
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer completed
** Message: transfer of DSC00015.JPG to /tmp/gvfsobexftp-tmp-V5GFNX started
** Message: filename: /手機記憶體/相簿/100MSDCF/DSC00015.JPG (DSC00015.JPG) copying to /tmp/gvfsobexftp-tmp-V5GFNX (retval 2)
Some clues could be found in the dbus.log from .cache/upstart/
If you try to open the picture directly from the phone, it works fts:2161) : WARNING **: Unable to get info on application: //nautilus- autostart. desktop p-tmp-8209MX started 相簿/100MSDCF/ DSC00015. JPG (DSC00015.JPG) copying to /tmp/gvfsobexft p-tmp-8209MX (retval 2)
** (zeitgeist-
** Message: transfer of DSC00015.JPG to /tmp/gvfsobexft
** Message: filename: /手機記憶體/
Failed to download a file from mobile phone p-tmp-EKAANX started 相簿/100MSDCF/ DSC00013. JPG (DSC00013.JPG) copying to /tmp/gvfsobexft p-tmp-EKAANX (retval 2) lderToRoot failed lderToRoot failed
** Message: transfer of DSC00013.JPG to /tmp/gvfsobexft
** Message: filename: /手機記憶體/
** Message: ChangeCurrentFo
** Message: transfer got cancelled
** Message: ChangeCurrentFo
Successful to download a file from another laptop: p-tmp-T5YONX started p-tmp-T5YONX (retval 2)
** Message: transfer of HiCOS Client v2.1.9.1u.zip to /tmp/gvfsobexft
** Message: filename: /HiCOS Client v2.1.9.1u.zip (HiCOS Client v2.1.9.1u.zip) copying to /tmp/gvfsobexft
Successful to upload a file to the mobile phone Pictures/ Screenshot. png started p-tmp-V5GFNX started 相簿/100MSDCF/ DSC00015. JPG (DSC00015.JPG) copying to /tmp/gvfsobexft p-tmp-V5GFNX (retval 2)
** Message: transfer of Screenshot.png to /home/ubuntu/
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer progress
** Message: transfer completed
** Message: transfer of DSC00015.JPG to /tmp/gvfsobexft
** Message: filename: /手機記憶體/