Numerous people have reported problems using the Canon Powershot G1 and Pro90 IS
cameras when having the AC adapter plugged in :
Pro90 message example
G1 message
Jarno Elonen <his last name@iki.fi> has provided us with two USB snoopy dumps from the Windows driver,
With AC adapter (399 kb)
On battery (392 kb)
I have looked at these but not found anything different in the Canon initialization.
Either it is something we don't know is important or we need to reset the USB bus or close it or something.
Here are the same files as above but run through the 'urb-interpret' perl script found in
gphoto2/camlibs/canon/
With AC adapter (206 kb)
On battery (142 kb)
I removed all lines containing any of these patterns since they contain memory buffer adresses and always change, I then did a s/^\d+\s\d+\.\d+// to remove all sequence and time numbers and then did a diff -u with without. Diff result (85 kb).
I have no clue. If anyone is willing to donate me a Canon Powershot G1 I could try more, but there is not much more I can do without a camera of this model... If you are willing to donate me a camera, contact me at <fredrik@ this host>.
Hubert Figuiere spotted that Apple iPhoto
also says G1 doesn't work with AC adapter plugged in.
Good to see it is not just us ;) but since the Windows driver works with AC adapter there must be a way to do it.
Rasmus Kjærem Nielsen, mail to gphoto-devel dated Fri, 18 Jan 2002 12:34:40 +0100 :
Rasmus has more problems than just the AC adapter thingy. He supplied
gphoto2 debug output
showing that G1 initialization is not always working properly.