gPhoto

On Mon, Jun 26, 2006 at 11:47:25PM -0700, Forrest Sedgwick wrote:
> Hello,
> 
> I have been using my Canon EOS 350D with gPhoto 2.1.99 without any 
> problems for some time now and I've been very happy with the driver.  
> Recently I upgraded the old 512 MB compact flash card to a new 4 GB hard 
> drive card (from Seagate).  Now  I am getting "PTP IO Error" messages 
> when I try to do almost anything with the camera.  Sometimes simple 
> operations like "--summary" will succeed, but the "initializing camera" 
> step will take several minutes.  I have had absolutely no luck with 
> listing or downloading files.
> 
> Attached are the results of "env LANG=C gphoto2 --debug -l"  I have 
> included two files because some attempts will seem to get further than 
> others. I am using Fedora Core 5, kernel 2.6.17-1.2139, and gphoto2 
> 2.1.99-8.

These did not contain the actual debug.

Please use 
	LANG=C gphoto2 --debug -l >logfile 2>&1 

(to redirect stderr into the logfile too.)

Ciao, Marcus

Marcus Meissner wrote:
> On Mon, Jun 26, 2006 at 11:47:25PM -0700, Forrest Sedgwick wrote:
>   
>> Hello,
>>
>> I have been using my Canon EOS 350D with gPhoto 2.1.99 without any 
>> problems for some time now and I've been very happy with the driver.  
>> Recently I upgraded the old 512 MB compact flash card to a new 4 GB hard 
>> drive card (from Seagate).  Now  I am getting "PTP IO Error" messages 
>> when I try to do almost anything with the camera.  Sometimes simple 
>> operations like "--summary" will succeed, but the "initializing camera" 
>> step will take several minutes.  I have had absolutely no luck with 
>> listing or downloading files.
>>
>> Attached are the results of "env LANG=C gphoto2 --debug -l"  I have 
>> included two files because some attempts will seem to get further than 
>> others. I am using Fedora Core 5, kernel 2.6.17-1.2139, and gphoto2 
>> 2.1.99-8.
>>     
>
> These did not contain the actual debug.
>
> Please use 
> 	LANG=C gphoto2 --debug -l >logfile 2>&1 
>
> (to redirect stderr into the logfile too.)
>
> Ciao, Marcus
>   
Hi Marcus,

Oops!  Sorry about that.  I went to repeat the experiment and of course, 
this time the "gphoto2 -l" command stubbornly worked every time I used 
it (but the camera initialization step still took several minutes)  
However, when I went to retrieve the pictures from the camera, the 
"gphoto2 -P" still failed.  I have attached a log for each case ( I 
think :-) )  Let me know if you need anything else. 

Thanks!
-Forrest

> >>I have been using my Canon EOS 350D with gPhoto 2.1.99 without any 
> >>problems for some time now and I've been very happy with the driver.  
> >>Recently I upgraded the old 512 MB compact flash card to a new 4 GB hard 
> >>drive card (from Seagate).  Now  I am getting "PTP IO Error" messages 

We note that ...

> >>when I try to do almost anything with the camera.  Sometimes simple 
> >>operations like "--summary" will succeed, but the "initializing camera" 
> >>step will take several minutes.  I have had absolutely no luck with 
> >>listing or downloading files.

Hm.

> >>Attached are the results of "env LANG=C gphoto2 --debug -l"  I have 
> >>included two files because some attempts will seem to get further than 
> >>others. I am using Fedora Core 5, kernel 2.6.17-1.2139, and gphoto2 
> >>2.1.99-8.

> 0.000014 main(2): ALWAYS INCLUDE THE FOLLOWING LINES WHEN SENDING DEBUG MESSAGES TO THE MAILING LIST:
  ^^^^^^^^

These are seconds.milliseconds.

...
> 10.992917 PTP2/library.c(2):   SequenceNumber: 0x00000000
> 10.992940 gphoto2-port(2): Writing 16=0x10 byte(s) to port...
> 10.992963 gphoto2-port(3): Hexdump of 16 = 0x10 bytes follows:
> 0000  10 00 00 00 01 00 08 10-05 00 00 00 22 22 ee 32  ............"".2
> 
> 10.993594 gphoto2-port(2): Reading 512=0x200 bytes from port...
> 18.295231 gphoto2-port(2): Could only read 167 out of 512 byte(s)
> 18.295281 gphoto2-port(3): Hexdump of 167 = 0xa7 bytes follows:

It takes 8 seconds to read one single image information here.

This can be due to:
- slow CF disk
- just a timeout and protocol problem

There are several more of those.

> 73.473785 gphoto2-camera(2): Getting file 'IMG_8738.JPG' in folder '/store_00000001/DCIM/187CANON'...

It took 73 seconds to list all files. Thats the delay you are seeing.

> 73.473809 libgphoto2/gphoto2-filesys.c(2): Getting file 'IMG_8738.JPG' from folder '/store_00000001/DCIM/187CANON' (type 1)...
> 73.474337 context(2): Downloading 'IMG_8738.JPG' from folder '/store_00000001/DCIM/187CANON'...
> Downloading 'IMG_8738.JPG' from folder '/store_00000001/DCIM/187CANON'...
> 73.474375 PTP2/library.c(2): Getting file.
> 73.474397 gphoto2-port(2): Writing 16=0x10 byte(s) to port...
> 73.474420 gphoto2-port(3): Hexdump of 16 = 0x10 bytes follows:
> 0000  10 00 00 00 01 00 09 10-51 00 00 00 22 22 ee 32  ........Q..."".2
> 
> 73.475485 gphoto2-port(2): Reading 512=0x200 bytes from port...
> 81.479245 PTP2/library.c(2): PTP: gp_port_* function returned 0xffffffde 	 -34
> 81.479306 context(0): PTP I/O error

Reading the image timeouted....

> *** Error ***              
> PTP I/O error
> 81.479351 libgphoto2/gphoto2-filesys.c(2): Download of 'IMG_8738.JPG' from '/store_00000001/DCIM/187CANON' (type 1) failed. Reason: 'Unspecified error'
> 81.479373 gphoto2-camera(2): Operation failed!
> *** Error (-1: 'Unspecified error') ***       
> 
> 81.480129 gp-camera(2): Freeing camera...
> 81.480150 gphoto2-camera(2): Exiting camera ('Canon EOS 350D (PTP mode)')...
> 81.480176 ptp(2): PTP: Closing session
> 81.480200 gphoto2-port(2): Writing 12=0xc byte(s) to port...
> 81.480225 gphoto2-port(3): Hexdump of 12 = 0xc bytes follows:
> 0000  0c 00 00 00 01 00 03 10-52 00 00 00              ........R...    
> 
> 81.480493 gphoto2-port(2): Reading 512=0x200 bytes from port...
> 86.059446 gphoto2-port(3): Hexdump of 512 = 0x200 bytes follows:
> 0000  68 bb 28 00 02 00 09 10-51 00 00 00 ff d8 ff e1  h.(.....Q.......
> 0010  43 f6 45 78 69 66 00 00-49 49 2a 00 08 00 00 00  C.Exif..II*.....

But here starts the image content... Just very late.

	86 - 73 -> 13 seconds delay.

Since we currently have a maximum timeout of 8 seconds, this timeouts.

If you are up to recompile libgphoto2, in camlibs/ptp2/library.c is
#define USB_TIMEOUT 8000
which you could change to
#define USB_TIMEOUT 25000
(8 -> 25 seconds)

Ciao, Marcus