Re: Getting an old Canon A520 to work with Gphoto

Hi,

If it does not show up on lsusb something else is amiss.

it needs to show up on lsusb for libgphoto2 to find it.

Sounds like a hardware issue?

Ciao, Marcus
On Wed, Dec 13, 2017 at 10:57:24PM -0500, Alan Corey wrote:
> That combination should get me mass storage mode I assume.  No, I see
> nothing.  Forgot to mention, I'm using Gphoto 2-2.5.15 I built from
> the tarball.  The version in the Raspbian debs is a couple years old.
> 
> Something like having been dropped with the connector plugged in is
> what I worry about.  It just acts like a worn out microusb on a phone
> or Kindle, like it doesn't make contact.  I've tried wiggling it.  The
> pins look OK.
> 
> On 12/13/17, Mark Wagner <[email protected]> wrote:
> > On Wed, Dec 13, 2017 at 9:20 AM, Alan Corey <[email protected]> wrote:
> >> Nothing I can do makes the Canon show up in dmesg, lsusb, gtkam on my
> >> Pi.  I've got a thread at
> >> https://photo.stackexchange.com/questions/94695/getting-an-old-canon-a520-usb-recognized
> >>  but they don't seem to be Linux people.  I can go into gtkam and pick
> >> that model specifically from the list of cameras, it still doesn't
> >> work.  Meanwhile Gphoto and gtkam are working fine with my 2 Nikons.
> >>
> >> The camera is from 2005, somewhere appears a note that it isn't
> >> guaranteed to work with any USB 2.0 compliant device.  I'm trying to
> >> use it plugged directly into a Raspberry Pi 3B, no hub or extension
> >> cable between.  It's possible I might have an old laptop that's
> >> pre-USB 2.0, but not much else.  Has anyone used one of these recently
> >> with Gphoto?  Is it possible some change broke it and nobody noticed?
> >> The fact that it doesn't show up in lsusb seems ominous but I think
> >> I've seen that in 1 or 2 other cases where only a specific driver
> >> would find a device.  I have tried it both in acquisition and playback
> >> modes, figuring it probably does a USB mode switch.
> >
> > I've used an A520 plugged into a USB 2.0 port on a computer (not
> > recently, though: the USB connector stopped working after I
> > accidentally knocked the camera off the table while it was plugged
> > in).  As I recall, it was a bit finicky about the precise order of
> > operations when connecting it to a computer: with the camera turned
> > off and disconnected from the computer, put it in playback mode.
> > Power it up, still disconnected, and once it's ready to go, plug it
> > in.  At this point, it should show up in dmesg/lsusb regardless of
> > drivers.
> >
> > --
> > Mark
> >
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> 
> 
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-- 
Marcus Meissner,SUSE LINUX GmbH; Maxfeldstrasse 5; D-90409 Nuernberg; Zi. 3.1-33,+49-911-740 53-432,,serv=loki,mail=wotan,type=real <[email protected]>

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