[Libmtp-discuss] SanDisk Sansa View connection problem

[Sciamano <sci...@gm...>]

Hi everybody,
I'm the owner of a SanDisk Sansa View player, which needs the MTP
protocol to work (MSC is only available as a workaround, and anyway
I'd like it to work with libmtp).

I thought the developers of libmtp might be interested in the
anomalous behavior that happens when I try to connect to the device.

When I connect the View to the USB cable, its display shows
"Connected", but it really is not so.
In fact if I try to connect with any MTP-compatible software, like
Qlix or Amarok, they fail.

If I send the mtp-detect command, the View will reboot, and the
terminal will show the following info:

--------------------
libmtp version: 0.2.5

Attempting to connect device(s)
usb_claim_interface(): No such device
LIBMTP PANIC: Unable to initialize device 1
LIBMTP PANIC: configure_usb_devices() error code: 7 on line 1561
Detect: There has been an error connecting. Exiting
-------------------

As I said, while this shows up in the terminal, the device reboots.
During reboot, the View shows a splash screen with SanDisk's logo and
such, then there is a super-short moment (maybe half a second long)
when the View's GUI shows up. Immediately after that, the black screen
with the "connected" sign shows up again.

If I send the mtp-detect command now, it reboots again, and again, and
again... you get the point.

To make things work, I have to send the mpt-detect command during that
short moment in which the View's GUI is shown, otherwise I will not be
able to connect with any program that uses the mtp protocol.

I hope this helps improve libmtp's compatibility. If you need any more
information, or need me to try something, just ask.

Thanks for reading (and for working on libmtp).
Luca