Long story short: the gphoto2 library handles MP3 players in MTP mode. Due to a bug in gphoto2 *and* a problem with its HAL configuration files, it tries to take over the Sansa MP3 player when it is plugged in to the computer. Thus no /dev/sdXX nodes get created.
gphoto2 has been patched upstream, and there are temporary fixes by modifying the gphoto2/HAL configuration files. See the bug I linked to.
This bug should be merged with 355998 (https:/ /bugs.launchpad .net/ubuntu/ +source/ libgphoto2/ +bug/355998)
Long story short: the gphoto2 library handles MP3 players in MTP mode. Due to a bug in gphoto2 *and* a problem with its HAL configuration files, it tries to take over the Sansa MP3 player when it is plugged in to the computer. Thus no /dev/sdXX nodes get created.
gphoto2 has been patched upstream, and there are temporary fixes by modifying the gphoto2/HAL configuration files. See the bug I linked to.