I cannot connect my Sony A7RII camera except for file transfer; lsusb shows not output related to the camera.
The latest gphoto2 is installed and gphoto2 --list-cameras| grep -i "A7R II" claims that the camera is supported (libgphoto2 web page boldly states "Image Capture, Trigger Capture, Liveview, Configuration" abilities).
The remote docs warn use libgphoto2 2.5.13 or newer (which I've already checked).
Following is the output of env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt --config is
*** Error ***
Could not detect any camera
*** Error (-105: 'Unknown model') ***
0.000002 main (2): ALWAYS INCLUDE THE FOLLOWING LINES WHEN SENDING DEBUG MESSAGES TO THE MAILING LIST:
0.000033 main (2): gphoto2 2.5.23
0.000058 main (2): gphoto2 has been compiled with the following options:
0.000060 main (2): + gcc (C compiler used)
0.000061 main (2): + popt (mandatory, for handling command-line parameters)
0.000063 main (2): + exif (for displaying EXIF information)
0.000065 main (2): + cdk (for accessing configuration options)
0.000066 main (2): + aa (for displaying live previews)
0.000068 main (2): + jpeg (for displaying live previews in JPEG format)
0.000089 main (2): + readline (for easy navigation in the shell)
0.000093 main (2): libgphoto2 2.5.24
0.000112 main (2): libgphoto2 has been compiled with the following options:
0.000115 main (2): + standard camlib set SKIPPING SOME (ax203 canon digigr8 dimagev directory jl2005a jl2005c kodak_dc240 mars pentax ptp2 ricoh_g3 sierra sonix sq905 st2205 topfield tp6801 SKIPPING lumix)
0.000116 main (2): + gcc (C compiler used)
0.000118 main (2): + ltdl (for portable loading of camlibs)
0.000120 main (2): + EXIF (for special handling of EXIF files)
0.000122 main (2): libgphoto2_port 0.12.0
0.000124 main (2): libgphoto2_port has been compiled with the following options:
0.000126 main (2): + iolibs: disk ptpip serial usb1 usbdiskdirect usbscsi
0.000128 main (2): + gcc (C compiler used)
0.000129 main (2): + ltdl (for portable loading of iolibs)
0.000131 main (2): + EXIF (for vusb)
0.000133 main (2): + USB (libusb1, for USB cameras)
0.000134 main (2): + serial (for serial cameras)
0.000136 main (2): + no resmgr (serial port access and locking)
0.000137 main (2): + no ttylock (serial port locking)
0.000139 main (2): + no lockdev (serial port locking)
0.000141 main (2): CAMLIBS env var not set, using compile-time default instead
0.000143 main (2): IOLIBS env var not set, using compile-time default instead
0.000144 main (2): invoked with following arguments:
0.000146 main (2): --debug
0.000148 main (2): --debug-logfile=my-logfile.txt
0.000149 main (2): --config
0.000171 load_settings (2): Creating gphoto config directory ('/home/lrkwz/.gphoto')
0.000204 load_settings (2): Loading settings from file '/home/lrkwz/.gphoto/settings'.
0.000258 main (2): The user has not specified both a model and a port. Try to figure them out.
(...)
