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<div class="moz-cite-prefix">New developments:<br>
<br>
I dug up some old testing info from another problem and see that I
was using<br>
$ gvfs-mount -s gphoto2<br>
to unmount gvfs filesystems (used for all cameras supporting the
PTP standard for photo transfers)<br>
<br>
But to use gvfs-mount, you have to first install gvfs-bin.<br>
<br>
But in any case that now seems unnecessary. Once in PCManFM, one
can eject/unmount any of the filesystems displayed for the camera,
and it will unmount all of them. One of the displayed filesystems
will disappear from PCManFM at that point, and the other one or
two will remain displayed (thereby reflecting some status as
recognized or available, but not mounted). The camera is ready to
be unplugged.<br>
<br>
But there is still a lot of buggy behavior here. Either by
PCManFM, or perhaps by gvfs at the bottom of it. Some problems:<br>
- The Kodak EasyShare C182 error when plugged in: "Error
initializing camera: -53: Could not claim the USB device."<br>
- Multiple filesystems are represented. Two for the Canon
Powershot G1, both with matching contents. Three for the Kodak
EasyShare C182; some or all of the contents are duplicated.<br>
- There is another error if you do not initially mount the camera
storage in PCManFM, but say, in Shotwell, then close that and try
to mount in PCManFM. I didn't record the error but it duplicates
reliably.<br>
<br>
These bad behaviors are more troubling because opening PCManFM
when plugging in a camera is the only option offered by default.
On account of that I hope someone has time to better define the
bug(s) and pursue the problem. (I've undertaken several of these
mis/adventures. It is sometimes a long road, and now would be a
bad time for me take a big detour.)<br>
<br>
That reference to Shotwell brings me to another point.<br>
<br>
<hr size="2" width="100%"><br>
Looking for a less troubling and confusing user experience, I
found it reported that Shotwell is the default photo manager for
Ubuntu 14.04. It's available via Synaptic and only installs a few
small dependencies. Total download was 12.5 MB as I recall.<br>
<br>
Now plugging in a camera results in Shotwell being offered
alongside the file manager as choices to mount the storage. There
is also a checkbox where one could choose to always use Shotwell
instead of being offered the choice. (Though for the Kodak there
is still the Error -53 popup to OK through.)<br>
<br>
The Shotwell interface reasonably shows just one filesystem
represented for either the Canon or the Kodak. When one is done
previewing/importing and closes Shotwell, it automatically
unmounts the camera storage once again, and the camera can be
unplugged.<br>
<br>
That's better!<br>
<br>
<hr size="2" width="100%"><br>
All the same, I hope someone pursues and fixes this. I prefer
Lubuntu's initial default of using PCManFM for camera downloads --
it's just not working well now.<br>
<br>
--John<br>
<br>
On 9/23/2014 10:18 PM, Israel wrote:<br>
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<blockquote cite="mid:54222A03.6090904@gmail.com" type="cite">
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<div class="moz-cite-prefix">Hi John!<br>
I would check out some of the documentation on the gvfs...<br>
However you can try<br>
<tt>gvfs-mount --unmount</tt> <i><location></i><br>
where <location> is the actual location.<br>
You can also use<br>
<tt>gvfs-mount -o</tt><br>
to watch what it is dong when you plug it in.<br>
(it monitors the output)<br>
<tt>man gvfs-mount</tt><br>
will give you more information.<br>
You can also type<br>
<tt>man gvfs</tt><TAB><TAB><br>
(Use the actual TAB key) to see all the gvfs related commands
listed.<br>
This should at least get you pointed in the right direction<br>
<br>
On 09/23/2014 05:29 PM, John Hupp wrote:<br>
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<blockquote cite="mid:5421F44D.20206@prpcompany.com" type="cite">
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charset=utf-8">
I plugged a Kodak EasyShare C182 (supporting PTP file transfer)
into a 14.04.1 desktop today over USB and it responded with:<br>
<br>
"Error initializing camera: -53: Could not claim the USB device"<br>
<br>
OK'ing out of that, it then offered to open the device in the
file manager, where it had mounted 3 devices. One with no
contents, another with DCIM and MISC folders, and another with
something-store1 and something-store2 folders. (I suppose there
would be separate devices for internal memory and an SD card,
but I don't know why there would be 3 devices.)<br>
<br>
It was then only possible to unmount 1 of the 3 devices. To
prevent corruption, I powered down the PC before unplugging the
camera.<br>
<br>
Under 13.04, it responded:<br>
<br>
"Error initializing camera: -60: Could not lock the device"<br>
<br>
And then it opened in the file manager, again showing 3 devices,
only one of which I could unmount, so again I powered down to
disconnect.<br>
<br>
<hr size="2" width="100%"><br>
For a partial comparison, I plugged a Canon Powershot G1 into
the 14.04.1 desktop and there was no error, it offered to open
in file manager, and it mounted 2 devices, both with DCIM and
MISC folders. I was only able to unmount one of the devices and
so powered down to disconnect.<br>
<br>
<hr size="2" width="100%"><br>
Searching for non-ancient explanations (of which there are
many), I did find this popular bug:<br>
<br>
<a moz-do-not-send="true"
href="https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/1296275">PTP
Cameras not working on 14.04, works flawlessly on 12.04</a><br>
<br>
But that report does not reference either of these errors, and
this machine already has the prescribed libghoto2 update that
should fix the described bug.<br>
<br>
There is also this Launchpad Answer regarding error -53, but it
does not mention the unmount problem:<br>
<br>
<a moz-do-not-send="true"
href="https://answers.launchpad.net/ubuntu/+source/shotwell/+question/157569">Unable
to fetch previews from the camera: Could not claim the USB
device (-53)</a><br>
<br>
The errors and the unmount problem are both troubling, but if I
could find a manual unmount command (perhaps with gvfs?), at
least I would have a workaround that would not involve
rebooting.<br>
<br>
Does anyone have the lowdown on all this? What's the best
available solution?<br>
<br>
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<pre class="moz-signature" cols="72">--
Regards</pre>
<br>
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