konrads@coltsfoot:~$     env LANG=C gphoto2 --debug --camera "Canon PowerShot A95 (PTP mode)" --port "usb:" --capture-image
0.000016 main(2): ALWAYS INCLUDE THE FOLLOWING LINES WHEN SENDING DEBUG MESSAGES TO THE MAILING LIST:
0.000048 main(2): gphoto2 2.2.0
0.000066 main(2): gphoto2 has been compiled with the following options:
0.000077 main(2):  + gcc (C compiler used)
0.000086 main(2):  + popt (for handling command-line parameters)
0.000097 main(2):  + exif (for displaying EXIF information)
0.000109 main(2):  + no cdk (for accessing configuration options)
0.000119 main(2):  + no aa (for displaying live previews)
0.000129 main(2):  + jpeg (for displaying live previews in JPEG format)
0.000142 main(2):  + readline (for easy navigation in the shell)
0.000158 main(2): libgphoto2 2.2.1
0.000171 main(2): libgphoto2 has been compiled with the following options:
0.000180 main(2):  + gcc (C compiler used)
0.000190 main(2):  + EXIF (for special handling of EXIF files)
0.000200 main(2):  + no /proc/meminfo (adapts cache size to memory available)
0.000211 main(2): libgphoto2_port 0.6.1
0.000227 main(2): libgphoto2_port has been compiled with the following options:
0.000237 main(2):  + gcc (C compiler used)
0.000247 main(2):  + USB (libusb, for USB cameras)
0.000260 main(2):  + serial (for serial cameras)
0.000270 main(2):  + no resmgr (serial port access and locking)
0.000279 main(2):  + no baudboy (serial port locking)
0.000290 main(2):  + no ttylock (serial port locking)
0.000300 main(2):  + no lockdev (serial port locking)
0.000325 main(2): Processing 'model' option ('Canon PowerShot A95 (PTP mode)')...
0.000367 gphoto2-camera(2): Setting abilities ('Canon PowerShot A95 (PTP mode)')...
0.000383 setting/gphoto2-setting.c(2): Creating $HOME/.gphoto
0.000492 setting/gphoto2-setting.c(2): Loading settings from file "/home/konrads/.gphoto/settings"
0.000538 gphoto2-setting(2): Setting key 'model' to value 'Canon PowerShot A95 (PTP mode)' (gphoto2)
0.000553 gphoto2-setting(2): Saving 10 setting(s) to file "/home/konrads/.gphoto/settings"
0.000659 main(2): Processing 'port' option ('usb:')...
0.000696 gphoto2-port-info-list(2): Using ltdl to load io-drivers from '/usr/local/lib/libgphoto2_port/0.6.1'...
0.000765 gphoto2-port-info-list(2): Called for filename '/usr/local/lib/libgphoto2_port/0.6.1/disk'.
0.001262 gphoto2-port-info-list(2): Could not load port driver list: 'Unspecified error'.
0.001281 gphoto2-port-info-list(2): Called for filename '/usr/local/lib/libgphoto2_port/0.6.1/ptpip'.
0.001518 gphoto2-port-info-list(2): Loaded 'PTP/IP Connection' ('ptpip:') from '/usr/local/lib/libgphoto2_port/0.6.1/ptpip'.
0.001538 gphoto2-port-info-list(2): Loaded '' ('^ptpip') from '/usr/local/lib/libgphoto2_port/0.6.1/ptpip'.
0.001552 gphoto2-port-info-list(2): Called for filename '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.001765 gphoto2-port-serial(2): Trying to lock '/dev/ttyS0'...
0.001913 gphoto2-port-serial(2): Trying to lock '/dev/ttyS1'...
0.001957 gphoto2-port-serial(2): Trying to lock '/dev/ttyS2'...
0.002000 gphoto2-port-serial(2): Trying to lock '/dev/ttyS3'...
0.002041 gphoto2-port-serial(2): Trying to lock '/dev/ttyS4'...
0.002082 gphoto2-port-serial(2): Trying to lock '/dev/ttyS5'...
0.002124 gphoto2-port-serial(2): Trying to lock '/dev/ttyS6'...
0.002165 gphoto2-port-serial(2): Trying to lock '/dev/ttyS7'...
0.002206 gphoto2-port-serial(2): Trying to lock '/dev/ttyS8'...
0.002246 gphoto2-port-serial(2): Trying to lock '/dev/ttyS9'...
0.002287 gphoto2-port-serial(2): Trying to lock '/dev/ttyS10'...
0.002327 gphoto2-port-serial(2): Trying to lock '/dev/ttyS11'...
0.002363 gphoto2-port-serial(2): Trying to lock '/dev/ttyS12'...
0.002397 gphoto2-port-serial(2): Trying to lock '/dev/ttyS13'...
0.002432 gphoto2-port-serial(2): Trying to lock '/dev/ttyS14'...
0.002466 gphoto2-port-serial(2): Trying to lock '/dev/ttyS15'...
0.002501 gphoto2-port-serial(2): Trying to lock '/dev/ttyS16'...
0.002536 gphoto2-port-serial(2): Trying to lock '/dev/ttyS17'...
0.002570 gphoto2-port-serial(2): Trying to lock '/dev/ttyS18'...
0.002605 gphoto2-port-serial(2): Trying to lock '/dev/ttyS19'...
0.002640 gphoto2-port-serial(2): Trying to lock '/dev/ttyS20'...
0.002674 gphoto2-port-serial(2): Trying to lock '/dev/ttyS21'...
0.002709 gphoto2-port-serial(2): Trying to lock '/dev/ttyS22'...
0.002745 gphoto2-port-serial(2): Trying to lock '/dev/ttyS23'...
0.002779 gphoto2-port-serial(2): Trying to lock '/dev/ttyS24'...
0.002814 gphoto2-port-serial(2): Trying to lock '/dev/ttyS25'...
0.002853 gphoto2-port-serial(2): Trying to lock '/dev/ttyS26'...
0.002893 gphoto2-port-serial(2): Trying to lock '/dev/ttyS27'...
0.002934 gphoto2-port-serial(2): Trying to lock '/dev/ttyS28'...
0.002975 gphoto2-port-serial(2): Trying to lock '/dev/ttyS29'...
0.003015 gphoto2-port-serial(2): Trying to lock '/dev/ttyS30'...
0.003056 gphoto2-port-serial(2): Trying to lock '/dev/ttyS31'...
0.003096 gphoto2-port-serial(2): Trying to lock '/dev/ttyS32'...
0.003151 gphoto2-port-info-list(2): Loaded 'Serial Port 0' ('serial:/dev/ttyS0') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003167 gphoto2-port-info-list(2): Loaded 'Serial Port 1' ('serial:/dev/ttyS1') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003185 gphoto2-port-info-list(2): Loaded 'Serial Port 2' ('serial:/dev/ttyS2') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003200 gphoto2-port-info-list(2): Loaded 'Serial Port 3' ('serial:/dev/ttyS3') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003216 gphoto2-port-info-list(2): Loaded 'Serial Port 4' ('serial:/dev/ttyS4') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003229 gphoto2-port-info-list(2): Loaded 'Serial Port 5' ('serial:/dev/ttyS5') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003245 gphoto2-port-info-list(2): Loaded 'Serial Port 6' ('serial:/dev/ttyS6') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003256 gphoto2-port-info-list(2): Loaded 'Serial Port 7' ('serial:/dev/ttyS7') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003269 gphoto2-port-info-list(2): Loaded 'Serial Port 8' ('serial:/dev/ttyS8') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003281 gphoto2-port-info-list(2): Loaded 'Serial Port 9' ('serial:/dev/ttyS9') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003294 gphoto2-port-info-list(2): Loaded 'Serial Port 10' ('serial:/dev/ttyS10') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003310 gphoto2-port-info-list(2): Loaded 'Serial Port 11' ('serial:/dev/ttyS11') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003323 gphoto2-port-info-list(2): Loaded 'Serial Port 12' ('serial:/dev/ttyS12') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003339 gphoto2-port-info-list(2): Loaded 'Serial Port 13' ('serial:/dev/ttyS13') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003350 gphoto2-port-info-list(2): Loaded 'Serial Port 14' ('serial:/dev/ttyS14') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003363 gphoto2-port-info-list(2): Loaded 'Serial Port 15' ('serial:/dev/ttyS15') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003375 gphoto2-port-info-list(2): Loaded 'Serial Port 16' ('serial:/dev/ttyS16') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003387 gphoto2-port-info-list(2): Loaded 'Serial Port 17' ('serial:/dev/ttyS17') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003404 gphoto2-port-info-list(2): Loaded 'Serial Port 18' ('serial:/dev/ttyS18') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003417 gphoto2-port-info-list(2): Loaded 'Serial Port 19' ('serial:/dev/ttyS19') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003433 gphoto2-port-info-list(2): Loaded 'Serial Port 20' ('serial:/dev/ttyS20') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003444 gphoto2-port-info-list(2): Loaded 'Serial Port 21' ('serial:/dev/ttyS21') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003460 gphoto2-port-info-list(2): Loaded 'Serial Port 22' ('serial:/dev/ttyS22') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003471 gphoto2-port-info-list(2): Loaded 'Serial Port 23' ('serial:/dev/ttyS23') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003483 gphoto2-port-info-list(2): Loaded 'Serial Port 24' ('serial:/dev/ttyS24') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003495 gphoto2-port-info-list(2): Loaded 'Serial Port 25' ('serial:/dev/ttyS25') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003508 gphoto2-port-info-list(2): Loaded 'Serial Port 26' ('serial:/dev/ttyS26') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003524 gphoto2-port-info-list(2): Loaded 'Serial Port 27' ('serial:/dev/ttyS27') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003537 gphoto2-port-info-list(2): Loaded 'Serial Port 28' ('serial:/dev/ttyS28') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003553 gphoto2-port-info-list(2): Loaded 'Serial Port 29' ('serial:/dev/ttyS29') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003563 gphoto2-port-info-list(2): Loaded 'Serial Port 30' ('serial:/dev/ttyS30') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003580 gphoto2-port-info-list(2): Loaded 'Serial Port 31' ('serial:/dev/ttyS31') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003591 gphoto2-port-info-list(2): Loaded 'Serial Port 32' ('serial:/dev/ttyS32') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003602 gphoto2-port-info-list(2): Loaded '' ('^serial') from '/usr/local/lib/libgphoto2_port/0.6.1/serial'.
0.003614 gphoto2-port-info-list(2): Called for filename '/usr/local/lib/libgphoto2_port/0.6.1/usb'.
0.004336 gphoto2-port-info-list(2): Loaded 'Universal Serial Bus' ('usb:') from '/usr/local/lib/libgphoto2_port/0.6.1/usb'.
0.004354 gphoto2-port-info-list(2): Loaded '' ('^usb:') from '/usr/local/lib/libgphoto2_port/0.6.1/usb'.
0.004372 gphoto2-port-info-list(2): Loaded 'Universal Serial Bus' ('usb:004,007') from '/usr/local/lib/libgphoto2_port/0.6.1/usb'.
0.004386 gphoto2-port-info-list(2): Loaded 'Universal Serial Bus' ('usb:002,004') from '/usr/local/lib/libgphoto2_port/0.6.1/usb'.
0.004407 gphoto2-port-info-list(2): Counting entries (41 available)...
0.004419 gphoto2-port-info-list(2): 37 regular entries available.
0.004432 gphoto2-port-info-list(2): Looking for path 'usb:' (41 entries available)...
0.004448 gphoto2-port-info-list(2): Getting info of entry 34 (41 available)...
0.004462 gphoto2-camera(2): Setting port info for port 'Universal Serial Bus' at 'usb:'...
0.005118 gphoto2-port(2): Setting timeout to 5000 millisecond(s)...
0.005138 gphoto2-port(2): Setting settings...
0.005152 gphoto2-setting(2): Setting key 'port' to value 'usb:' (gphoto2)
0.005166 gphoto2-setting(2): Saving 10 setting(s) to file "/home/konrads/.gphoto/settings"
0.005316 gphoto2-camera(2): Initializing camera...
0.005337 gphoto2-port-usb(1): Looking for USB device (vendor 0x4a9, product 0x30bb)... found.
0.005350 gphoto2-port-usb(1): Detected defaults: config 1, interface 0, altsetting 0, inep 81, outep 02, intep 83, class 06, subclass 01
0.005363 gphoto2-camera(2): Loading '/usr/local/lib/libgphoto2/2.2.1/ptp2'...
0.005605 gphoto2-port(2): Opening USB port...
0.005655 gphoto2-port(0): Could not query kernel driver of device.
0.005691 gphoto2-port(2): Setting timeout to 8000 millisecond(s)...
0.005707 ptp(2): PTP: Opening session
0.005724 gphoto2-port(2): Writing 16=0x10 byte(s) to port...
0.005742 gphoto2-port(3): Hexdump of 16 = 0x10 bytes follows:
0000  10 00 00 00 01 00 02 10-00 00 00 00 01 00 00 00  ................

0.007287 gphoto2-port(2): Reading 4096=0x1000 bytes from port...
0.011292 gphoto2-port(2): Could only read 12 out of 4096 byte(s)
0.013122 gphoto2-port(3): Hexdump of 12 = 0xc bytes follows:
0000  0c 00 00 00 03 00 01 20-00 00 00 00              ....... ....

0.013139 gphoto2-port(2): Writing 12=0xc byte(s) to port...
0.013151 gphoto2-port(3): Hexdump of 12 = 0xc bytes follows:
0000  0c 00 00 00 01 00 01 10-01 00 00 00              ............

8.018335 PTP2/library.c(2): PTP: gp_port_* function returned 0xffffffdd          -35
8.018396 context(0): PTP I/O error

*** Error ***
PTP I/O error
8.018425 gphoto2-port(2): Closing port...
8.020424 context(0): An error occurred in the io-library ('Unspecified error'): Could not query kernel driver of device.

*** Error ***
An error occurred in the io-library ('Unspecified error'): Could not query kernel driver of device.
ERROR: Could not capture.
*** Error (-1: 'Unspecified error') ***

For debugging messages, please use the --debug option.
Debugging messages may help finding a solution to your problem.
If you intend to send any error or debug messages to the gphoto
developer mailing list <gphoto-devel@lists.sourceforge.net>, please run
gphoto2 as follows:

    env LANG=C gphoto2 --debug --debug --camera "Canon PowerShot A95 (PTP mode)" --port "usb:" --capture-image

Please make sure there is sufficient quoting around the arguments.

8.020793 gp-camera(2): Freeing camera...
8.020809 gphoto2-port(2): Freeing port...
8.020822 gphoto2-port(2): Closing port...
8.020862 libgphoto2/gphoto2-filesys.c(2): Clearing fscache LRU list...
8.020875 libgphoto2/gphoto2-filesys.c(2): fscache LRU list already empty
8.020889 gphoto2-filesystem(2): Internally deleting all folders from '/'...