69291355d5
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@4893 67ed7778-7388-44ab-90cf-0a291f65f57c
172 lines
6.3 KiB
Plaintext
172 lines
6.3 KiB
Plaintext
========================================================================
|
|
|
|
Q: gphoto2 does not find my camera. What shall I do?
|
|
|
|
A: First try to run "gphoto2 --list-ports" and look whether the ports
|
|
you want to use are listed there:
|
|
- For serial devices, the port with the appropriate device must be
|
|
listed
|
|
- For USB devices, you need the "usb:" port in the list. If you
|
|
don't see it, check whether you compiled gphoto2 with libusb
|
|
support.
|
|
|
|
Then try to run "gphoto2 --auto-detect" and look whether the camera
|
|
is detected.
|
|
|
|
If your gphoto2 cannot access the USB device as non-root users, you
|
|
have to set up hotplugging correctly. See gphoto2.txt for details.
|
|
|
|
AND DO NOT RUN gphoto2 AS ROOT.
|
|
|
|
========================================================================
|
|
|
|
Q: I get the error message
|
|
|
|
*** Error ('Could not claim the USB device') ***
|
|
|
|
Could not claim interface 0 (Operation not permitted). Make sure no
|
|
other program or kernel module (e.g. dc2xx or stv680) is using the
|
|
device and you have read/write access to the device.
|
|
|
|
What can I do to make it work?
|
|
|
|
A: You have to make sure that no such kernel module is loaded and that
|
|
you have to set up the permissions on your USB device correctly.
|
|
For Linux, this is described in the file named gphoto2.txt in
|
|
your gphoto2 documentation directory (named doc/ in the source tree).
|
|
|
|
========================================================================
|
|
|
|
Q: I get the error message
|
|
|
|
Could not find USB device (vendor 0x0000, product 0x0000). Make
|
|
sure this device is connected to the computer
|
|
|
|
What can I do to make it work?
|
|
|
|
A: You have to set up the permissions on your USB device correctly.
|
|
For Linux, this is described in the file named gphoto2.txt in
|
|
your gphoto2 documentation directory (named doc/ in the source tree).
|
|
|
|
========================================================================
|
|
|
|
Q: gphoto2 does not work, the driver reports some error messages.
|
|
What shall I do?
|
|
|
|
A: First of all make sure, that you have only one instance of gphoto2
|
|
installed on your system. Unless you know what you're doing you should
|
|
remove all gphoto2 installation, then you may do (as root):
|
|
rm -rf /usr/local/lib/gphoto2*
|
|
rm -rf /usr/lib/gphoto2*
|
|
(above applyes specialy if you used package and CVS version)
|
|
After that install newest gphoto2 and test whether it works now.
|
|
If not, see below.
|
|
|
|
========================================================================
|
|
|
|
Q: My Canon PowerShot G1/Pro 90 IS doesn't work with gphoto2 when using
|
|
the AC adapter. What should I do?
|
|
|
|
A: This is a known bug which we cannot fix since none of the active
|
|
gphoto2 developers own one of these cameras. Your alternatives are as
|
|
follows :
|
|
|
|
Fix it and send us a patch.
|
|
|
|
Donate a G1 to one of the active Canon driver developers.
|
|
|
|
Run the camera on battery instead of the AC adapter.
|
|
|
|
There is some more info regarding this at
|
|
|
|
http://krixor.xy.org/fredrik/gp/canon-g1-ac-problem/
|
|
|
|
good luck.
|
|
|
|
========================================================================
|
|
|
|
Q: I have a special problem with CameraXYZ. Where can I find information
|
|
about it?
|
|
|
|
A: You can look into the README file of your driver <driver>. It is
|
|
located in camlibs/<driver>/ in your source tree.
|
|
|
|
========================================================================
|
|
|
|
Q: I run Linux 2.4.x and I can't get USB to work at all. I keep getting
|
|
|
|
kernel: usb_control/bulk_msg: timeout
|
|
kernel: usbdevfs: USBDEVFS_BULK failed dev 3 ep 0x81 len 64 ret -110
|
|
|
|
How can I make USB work?
|
|
|
|
A: No idea. Sometimes it works and sometimes it doesn't. If you know a
|
|
solution, please let us know.
|
|
|
|
========================================================================
|
|
|
|
Q: I've got a serial camera, but gphoto2 doesn't work on SuSE 7.0
|
|
(or greater). You told me that my camera is supported! Fix it!
|
|
|
|
A: Cool down, Joe, and listen to the wise words of Linda MacPhee-Cobb:
|
|
"If you are not getting a response from a camera plugged into
|
|
the serial port, check your /var/log/boot.msg file for the
|
|
following entry near the end:
|
|
*This package use the ttyS0 device by default.
|
|
The installation of this package only makes sense
|
|
if you use a braille display.
|
|
This is from blinx, and you will need to turn it off,
|
|
or better, uninstall it."
|
|
|
|
========================================================================
|
|
|
|
Q: Dudes, Windows is the way to go. How do I compile gphoto2 for that
|
|
environment?
|
|
|
|
A: We don't have the money to buy Windows and something like Visual C.
|
|
Therefore, we can't provide you a gphoto2 for Windows. You have two
|
|
choices (at least):
|
|
(1) Buy a fast computer, buy Windows and Visual C and some manuals on
|
|
how to access USB or serial ports on Windows. Send all that
|
|
including a blank cheque to us (ask for the address on
|
|
gphoto-devel@gphoto.org).
|
|
(2) Try to figure out how to get gphoto2 working on Windows and send
|
|
us the patches.
|
|
|
|
========================================================================
|
|
|
|
Q: What's the best way to rotate downloaded JPEG images w/o losses?
|
|
|
|
A: If you do not care about EXIF information:
|
|
|
|
jpegtran -copy all -rotate 90
|
|
|
|
If you want to preserve EXIF information:
|
|
|
|
jhead -cmd 'jpegtran -rotate 90 -outfile &o &i' my-pic.jpg
|
|
|
|
========================================================================
|
|
|
|
Q: I want to use GNU stow, but that fails.
|
|
|
|
A: I don't know what stow is, but have a look at #553647.
|
|
|
|
========================================================================
|
|
|
|
Q: I wanna have CVS write access. How do I get one?
|
|
|
|
A: We provide CVS write access to persons that show _continued_ interest in
|
|
a _specific part_ of gphoto2. If there is already a person maintaining this
|
|
specific part of gphoto2 (i.e. a camera driver), we prefer you submit
|
|
patches to the maintainer who will then check them in or request
|
|
modifications.
|
|
|
|
========================================================================
|
|
|
|
Q: You took away my CVS write access! What did I do wrong?
|
|
|
|
A: If your name is not listed in gphoto2/MAINTAINERS, and if we haven't heard
|
|
from you lately, we assume that you finished your work on gphoto2 and that
|
|
you don't need write access any longer. If this is not the case, please
|
|
contact one of the project admins.
|