[Lubuntu] How to unmount a camera from the command line?

[Yorvyk]

On 02/11/12 01:10, Phill Whiteside wrote:
> Hi John,
>
> I've found my little minicom usb camera / mic device. It does not get
> mounted by PCManFM, but does appear if I check
>
> phillw at piglet:~$ ls /dev/video*
> /dev/video0
>
> Which changes to
>
> phillw at piglet:~$ ls /dev/video*
> /dev/video0  /dev/video1
>
> when I plug it in.
>
> I suspect that as my device is a real dumb web-cam, has yours got in
> built memory? If it has, then that would explain it being mounted as a
> storage device.
>
> I'm following the hints and tips from the wiki area [1] The Multimedia
> guys on the forum are far better placed to assist you[2].
>
> Regards,
>
> Phill.
> 1. https://help.ubuntu.com/community/Webcam#Configuring_Webcam_Software
> 2. http://ubuntuforums.org/forumdisplay.php?f=334
>
>
> On 1 November 2012 23:59, John Hupp <lubuntu at prpcompany.com
> <mailto:lubuntu at prpcompany.com>> wrote:
>
>     Thanks!
>
>     The home page is at http://entangle-photo.org/
>
>     Since Entangle is not in the official repos, I installed it from
>     GetDeb: http://www.getdeb.net/software/Entangle
>
>     On 11/1/2012 7:43 PM, Phill Whiteside wrote:
>>     I'd expect USB flash drives to be auto mounted (The screams of "I
>>     plugged my flash drive in & it didn't mount - do not worth
>>     thinking about :) )
>>
>>     I'm in no way any expert on this, but IIRC, when I plugged my USB
>>     webcam in a few cycles ago, it launched Cheese and not PCManFM.
>>     Things will have changed and my laptop as of them is no longer,
>>     this one has a built in one. If you have a link to Entangle I'd be
>>     happy to install it & see how it gets on.
>>
>>     Regards,
>>
>>     Phill.
>>
>>     On 1 November 2012 23:06, John Hupp <lubuntu at prpcompany.com
>>     <mailto:lubuntu at prpcompany.com>> wrote:
>>
>>         Perhaps it is too eager, I don't know.  It seems like standard
>>         behavior with removable storage -- it does the same thing with
>>         USB flash drives, which is also what Windows does.
>>
>>         It would also be interesting to figure out why Entangle locks
>>         up when it tries to unmount the camera.
>>
>>         But in the meantime I'm very eager for a work-around.  I've
>>         put in a lot of research and testing time on this over the
>>         lastfew weeks, and it seems that I'm close to a decent
>>         solution with Entangle.  (I like it very much when things work
>>         the way they should, and I prefer to see the "right" solution,
>>         but I'll admit to some battle-weariness with confronting one
>>         issue after another.)
>>
>>         On 11/1/2012 6:42 PM, Phill Whiteside wrote:
>>>         Hi John,
>>>
>>>         from what you describe I think PCManFM is being maybe just a
>>>         little too eager to mount anything that arrives in a USB
>>>         port. As such, I'd suggest raising a bug against PCManFM in
>>>         the first instance, it can always get re-allocated once the
>>>         dev-team have had chance to look into it.
>>>
>>>         Regards,
>>>
>>>         Phill.
>>>
>>>         On 1 November 2012 22:36, John Hupp <lubuntu at prpcompany.com
>>>         <mailto:lubuntu at prpcompany.com>> wrote:
>>>
>>>             I'm trying to get a Canon Powershot G1 USB-connected
>>>             camera working with remote capture (tethering) using
>>>             either Entangle or Gtkam.
>>>
>>>             Both apps get tripped up on the fact that Lubuntu
>>>             auto-mounted the camera. Gtkam simply generates an error
>>>             message about the camera already being in use. Entangle
>>>             notes the same condition and offers to unmount the
>>>             camera, but approving that causes the program to lock up.
>>>
>>>             Either program launches OK if I manually unmount the
>>>             camera from pcmanfm first.
>>>
>>>             So I'd like to launch the camera program from a script
>>>             that first unmounts the camera.
>>>
>>>             Post #2 in
>>>             http://ubuntuforums.org/showthread.php?t=967104had a
>>>             solution in the command "gvfs-mount -s gphoto2," but
>>>             gvfs-mount is not installed by default in Lubuntuand is
>>>             not available from the default repos.
>>>
>>>             I also tried "sudo umount /home/<user>/.gvfs," which was
>>>             the mount point suggested to me by "sudo mount." That ran
>>>             without error, but the camera did not seem to be truly
>>>             unmounted, and both cam apps errored as before.
>>>
>>>             What's my best solution in Lubuntu?
>>>
>>
 >
I think you need to be looking at writing udev rules for the camera.

--
Steve