Re: [clug-talk] share&get my how-to of USB camera with RH9

[Jeff Clement]

I should have specified that my group file was just a sample.  Yours 
will be different.  My usb group ID is 1002 so I would add:

none        /proc/bus/usb       usbfs 
devuid=0,devgid=1002,devmode=0660  0   0

Yours is 502 so you should add the following to fstab:
none        /proc/bus/usb       usbfs 
devuid=0,devgid=502,devmode=0660  0   0

Then unmount / remount /proc/bus/usb and it should hopefully work.
If it doesn't work perhaps some output would be handy.
Good luck,
Jeff
Reno L wrote:
Hi, Jeff,
thank you for your information. I failed to make it 

 

 $ cat /etc/group | grep usb
 usb:*:1002:jsc
   

My output:
cat /etc/group | grep usb
usb:x:502:reno
I can make a group usb which contains user reno and
the group ID is 502
 

Become root now.  Then we
modify fstab to mount 
usbfs owned by that group.  Basicall comment out the
line in /etc/fstab 
that has /proc/bus/usb in it (by adding a # sign to
it) and add this line:

 none        /proc/bus/usb       usbfs
devuid=0,devgid=1002,devmode=0660  0   0
   

There is no /proc/bus/usb within my /etc/fstab file,
instead, there is:
none    /proc        proc    defaults        0 0
I comment out it.
I add:
none        /proc/bus/usb       usbfs 
devuid=0,devgid=1002,devmode=0660  0   0

within the /etc/fstab.
 

And now unmount and remount /proc/bus/usb with:
 $ umount /proc/bus/usb
 $ mount /proc/bus/usb
   

Yes, I did these two.
 

And now you can run gphoto2 as non-root users.
   

unfortunately, I could not run gphoto2 with user name
reno.
I am not sure if different distro will have the
different outcome.
Regards,
Reno



 

Also related.  The Canon digicams set an exif flag
with image 
orientation that causes *some* programs to
automatically rotate portrait 
pics.   The keyword is *some*.  I find it rather
annoying that not all 
of the programs honour this so, for example, it is
portrait in kuikshow 
but landscape in gimp.  There is a neat program
called jhead (google it 
if you don't have it) that will rotate all the
images according to that 
exif flag and remove the flag.  It'll also rename
your files to 
something more useful like the date and time the
photo was taken. 

I do the following when I want to pull the photos
under Linux:
 $ gphoto -P
 $ jhead -n"%Y%m%d-%H%M%S" -autorot -ft *.JPG
Hope that helps a bit.
Jeff
Reno L wrote:
   

Hi, all,
Since I get much from CLUG, I would share what I
     

try
   

today. Also, I want to get all the corrections and
suggestions from CLUG on this topic.
I am using Cannon Powershot A70, usb interface.
     

There
   

is no A70 model from the gtKam by default within
     

RH9. 
   

The reason I try to get the photos from A70 with
     

liunx
   

is I was tired of Windows(coz it is so easy to get
photos...;).
The following is my path:
1. Failed to locate linux driver from Cannon
     

website
   

coz Cannon just ignores Linux. 
2. Seaching google, find that gPhoto2 might be
     

working
   

for A70.
3. Download one gz file: gphoto2-2.1.4.tar.gz, and
     

one
   

doc: gphoto2-manual-2.1.1dev4.pdf. I suggest these
     

two
   

are must to download.
4. type su -, log in as root, decompress .gz file
     

and
   

tar xvf gphoto2-2.1.4.tar.gz. System working......
after a little while, you will find a folder called
gphoto2-2.1.4 generated.
5. Go into this new folder and look around, gee,
     

there
   

are so many files and folder within it. What hell
     

can
   

I go next step? 
6. Don't issue any command, just go to read the
download pdf file: gphoto2-manual-2.1.1dev4.pdf.
     

Gee,
   

do I need to compile them? do I need to reconfigure
     

my
   

system? do I need to ...? 
7. NO, don't do anything. Just type in gphoto2.
     

Good,
   

I see gphoto2 options list jump out. Oh, yeah, I
     

don't
   

need to anyting with recompile, reconfiguration,...
     

8. Don't forget, I am still ROOT now.
9. After reading the pdf DOC, try some command
     

options
   

under root, like:
gphoto2 --list-ports // I can see the usb
     

interface
   

now
gphoto2 --auto-detect //my camera is USB PTP Class
Camera
gphoto2 --summary // no, erro information.
gphoto2 --list-folders //great, I can see my
     

camera
   

folders
gphoto2 --list-files //great, I can see all my pic
name listing there
gphoto2 --get-all-files //finally, I can download
     

all
   

pics from my digital camera to my linux box, even
     

it
   

is a challange then windows.
gphoto2 --capture-preview //no, erro information.
10. Since I can not read pic from camera directly,
     

I
   

use kuikshow to read the download pics on the
harddisk. Still good to go. ;)
11. I must do something extra, coz I can not issue
     

any
   

gphoto2 command when I am a universal user( NOT
     

ROOT
   

user). Go to read DOC pdf file, it tells me how to
     

do
   

it.
12. It looks like, gphoto2 can help me download pic
     

from digital camera, but not all of command options
   

good to use. My Cannon PowerShot A70 doesn't
     

support
   

couples of options.(see the errors arose as above)
I am thinking, is there any easier way then my
solution to read the pics from a universal model of
digital camera on Linux??? Beyand gPhoto2 is ok
     

too.
   

reno
     


                
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