Public bug reported:
Binary package hint: gvfs
When unmounting a Kodak V1253 PTP camera the device is left in a bad
state. Since this is automounted on connection, you can't use F-Spot or
other applications which require it to be unmounted first.
If I kill off gvfs-gphoto2-volume-monitor (to prevent the automount from
happening) and power cycle the camera, applications like F-Spot will
work fine. If I then mount the volume I can access the files in nautilus
fine, but once unmounted, the next application trying to access the
camera will hang (including mounting again.)
The attached patch works around this problem by resetting the camera
after a few tries but this only patches the symptom and not the initial
problem (there is still a delay while the camera is reset to get it out
of the bad state.)
Other applications can be opened and closed multiple times without
problems. This leads me to believe that something in the unmount is not
correctly closing out the camera session.
PTP symptom from the application after the unmount (from gphoto2 -l
--debug):
* Camera continuously returns 0x2004 (Invalid TrasactionID) from
opensession (this will repeat forever without the attached patch)
0.143070 ptp(2): PTP: Opening session
0.143092 gphoto2-port(2): Writing 16=0x10 byte(s) to port...
0.143112 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 ................
0.143383 ptp2/ptp_usb_getresp(2): reading response
0.143404 ptp2/ptp_usb_getpacket(2): getting next ptp packet
0.143423 gphoto2-port(2): Reading 512=0x200 bytes from port...
0.144372 gphoto2-port(2): Could only read 12 out of 512 byte(s)
0.144392 gphoto2-port(3): Hexdump of 12 = 0xc bytes follows:
0000 0c 00 00 00 03 00 04 20-00 00 00 00 ....... ....
0.144410 ptp2/usb_getresp(0): request code 0x1002 getting resp error
0x2004
Package versions:
gvfs-backends: 1.4.1-0ubuntu1
libgphoto2-2: 2.4.6-1ubuntu6
** Affects: gvfs (Ubuntu)
Importance: Undecided
Status: New
** Tags: gvfsd-gphoto2
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gvfsd-gphoto2 unmount leaves camera in a bad state
https://bugs.launchpad.net/bugs/513077
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