On Tue, May 05, 2020 at 07:47:52PM +0200, Fernando Folini wrote:
> I am having issues trying to use a Sony a5100 as a Webcam on LinuxMint 19
> with Gphoto2. What am I missing?
> Please help me to find a solution, I attach here all the debugging files:

> *** Error ***
> An error occurred in the io-library ('Could not claim the USB device'):
> Could not claim interface 0 (Device or resource busy). Make sure no other
> program (gvfs-gphoto2-volume-monitor) or kernel module (such as sdc2xx,
> stv680, spca50x) is using the device and you have read/write access to the
> device.
> *** Error (-53: 'Could not claim the USB device') ***

Something else is using and so blocking the device, likely the "gvfs" gphoto 
slaves from GNOME.

You need to disable that gvfs gphoto devices.

Ciao, Marcus


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