Question about file transfer to Android device

[Šarūnas Burdulis]

On 2025-09-22 1:54 PM, Bret Busby wrote:
> ...
> 2025-09-23 01:49:38 bret at bret-Precision-Tower-5810:~ > mtp-detect
> libmtp version: 1.1.19
> 
> Listing raw device(s)
> Device 0 (VID=1f3a and PID=4ee1) is UNKNOWN in libmtp v1.1.19.
> Please report this VID/PID and the device model to the libmtp 
> development team
>     Found 1 device(s):
>     1f3a:4ee1 @ bus 3, dev 31
> Attempting to connect device(s)
> libusb_claim_interface() reports device is busy, likely in use by GVFS 
> or KDE MTP device handling alreadyLIBMTP PANIC: Unable to initialize device
> Unable to open raw device 0


In README of libmtp (https://github.com/libmtp/libmtp) there is this, 
which might be relevant in your case (among other information):

* mtp-* tools doesn't work because someone else is already hogging
   the device

   This is a common problem, the most common case could be that
   gphoto2 (which can also talk PTP/MTP) is taking over the device
   as soon as it's plugged in. Some distributions are configured that
   way. Counter it like this:

   gvfs-mount -s gphoto2

   Then re-attach the device.

   Sometimes some gvfs daemons are running on the
   system and hogging the device, try stopping them
   with something like these commands:

   killall gvfs-mtp-volume-monitor
   killall gvfs-gphoto2-volume-monitor

   Then plug in the device and issue "mtp-detect" to figure out if
   this may be the case.

-- 
Šarūnas Burdulis
Dartmouth Mathematics
https://math.dartmouth.edu/~sarunas

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