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**oshunluvr** · Sep 29, 2014, 01:27 PM

Depends on how it's being mounted I guess. Usually it's under /media/<yourusername> if it's detected as removable media. There might be a udev rule controlling it and mounting it some other way. Try running dmesg before you plug it in and then again right after plugging it in. That might give a hint.

**GreyGeek** · Sep 29, 2014, 02:21 PM

All devices have a file in the /dev subdirectory.
For a web camera that is detected at boot it is assigned the file name of /dev/video0.
If you open that location with vlc it will display what the camera sees (but not any audio unless you select the audio file).
Also, under /dev is the subdirectory /dev/v4l It gives the "by-id" and "by-path" designation for the video0 device. "By-id" may have a usb designation and "by-path" a pci designation.

**Al1000** · Sep 29, 2014, 02:59 PM

Thanks for the responses. The only directories in /media/al are other HDD partitions that I have mounted.

I couldn't see anything notable in the output of dmesg before plugging the camera in, but found this when I ran it again after:

Code:

[25129.252064] usb 1-6: new high-speed USB device number 4 using ehci-pci
[25129.395513] usb 1-6: New USB device found, idVendor=04a9, idProduct=314f
[25129.395520] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[25129.395523] usb 1-6: Product: Canon Digital Camera
[25129.395526] usb 1-6: Manufacturer: Canon Inc.
[25129.395528] usb 1-6: SerialNumber: 741E191CA56046C88626FE3C43ABCB32

These are all the directories and files in /dev

Code:

autofs           log                 ptmx    sda2      tty15  tty37  tty59      ttyS21   vcs2
block            loop0               pts     sda3      tty16  tty38  tty6       ttyS22   vcs3
bsg              loop1               ram0    sda5      tty17  tty39  tty60      ttyS23   vcs4
btrfs-control    loop2               ram1    sda6      tty18  tty4   tty61      ttyS24   vcs5
bus              loop3               ram10   sda7      tty19  tty40  tty62      ttyS25   vcs6
cdrom            loop4               ram11   sdb       tty2   tty41  tty63      ttyS26   vcs7
char             loop5               ram12   sg0       tty20  tty42  tty7       ttyS27   vcsa
console          loop6               ram13   sg1       tty21  tty43  tty8       ttyS28   vcsa1
core             loop7               ram14   sg2       tty22  tty44  tty9       ttyS29   vcsa2
cpu_dma_latency  loop-control        ram15   shm       tty23  tty45  ttyprintk  ttyS3    vcsa3
cuse             lp0                 ram2    snapshot  tty24  tty46  ttyS0      ttyS30   vcsa4
disk             mapper              ram3    snd       tty25  tty47  ttyS1      ttyS31   vcsa5
dri              mcelog              ram4    sr0       tty26  tty48  ttyS10     ttyS4    vcsa6
ecryptfs         mem                 ram5    stderr    tty27  tty49  ttyS11     ttyS5    vcsa7
fd               net                 ram6    stdin     tty28  tty5   ttyS12     ttyS6    vga_arbiter
full             network_latency     ram7    stdout    tty29  tty50  ttyS13     ttyS7    vhci
fuse             network_throughput  ram8    tty       tty3   tty51  ttyS14     ttyS8    vhost-net
fw0              null                ram9    tty0      tty30  tty52  ttyS15     ttyS9    watchdog
hidraw0          nvidia0             random  tty1      tty31  tty53  ttyS16     uhid     zero
hidraw1          nvidiactl           rfkill  tty10     tty32  tty54  ttyS17     uinput
hpet             parport0            rtc     tty11     tty33  tty55  ttyS18     urandom
input            port                rtc0    tty12     tty34  tty56  ttyS19     usb
kmsg             ppp                 sda     tty13     tty35  tty57  ttyS2      vcs
kvm              psaux               sda1    tty14     tty36  tty58  ttyS20     vcs1

I plugged the camera in, and no additional files were created. Do you know which file might pertain to the camera?

I also tried searching the computer for v4l in case I was looking in the wrong place, but this is all I found:

Code:

al@al-System-Product-Name:/$ sudo find / -type d -name v4l
/usr/src/linux-headers-3.13.0-36-generic/include/config/v4l
/usr/src/linux-headers-3.13.0-35-generic/include/config/v4l
/usr/src/linux-headers-3.13.0-34-generic/include/config/v4l

**jlittle** · Sep 29, 2014, 11:15 PM

Perhaps you've turned off your "Places" panel? It has a section called "Devices" where my phone appears if it's plugged in. If you've got the menu bar, click View->Panels, or if you've got the tool bar, click the settings icon.

If you have got the Places panel, with its devices section, and your camera is not there, maybe it's been hidden; right-click on the devices section and check "show all entries".

**Al1000** · Oct 02, 2014, 12:07 PM

It shows up as a device in what I assume is the ''Places'' panel, at the lower right corner of the screen; and it also shows up in System Settings.

But I still have no clue whereabouts it is in the file system.

**vinnywright** · Oct 02, 2014, 01:03 PM

Originally posted by Al1000 View Post

It shows up as a device in what I assume is the ''Places'' panel, at the lower right corner of the screen; and it also shows up in System Settings.

[ATTACH=CONFIG]5340[/ATTACH]

But I still have no clue whereabouts it is in the file system.

what you are assuming is the "places" panel ,,,,,is the device notifier ,,,,telling you you have a camera available ,,,,and I see from your screenshot it is not mounted yet ...........so it is not in the file system yet .

if you click the camera in the device notifier it will give you options on opening it .......... once you open it in something it will be mounted and in the file system ///// prob under /media

VINNY

**Al1000** · Oct 02, 2014, 01:36 PM

Originally posted by vinnywright View Post

what you are assuming is the "places" panel ,,,,,is the device notifier ,,,,telling you you have a camera available ,,,,and I see from your screenshot it is not mounted yet ...........so it is not in the file system yet .

Thanks for the info. I had previously thought that it would be mounted when the pop-up appears.

Where would I find the Places panel?

if you click the camera in the device notifier it will give you options on opening it .......... once you open it in something it will be mounted and in the file system ///// prob under /media

VINNY

I opened it in Dolphin, but still can't find it in the file system.

**GreyGeek** · Oct 02, 2014, 02:01 PM

As stated before, EVERYTHING in Linux is a file. Devices are represented by files in /dev. Any other representations (in Dolphin or whereever) link back to some file under /dev. See my previous post in this thread.

**Al1000** · Oct 02, 2014, 02:44 PM

Originally posted by GreyGeek View Post

As stated before, EVERYTHING in Linux is a file. Devices are represented by files in /dev. Any other representations (in Dolphin or whereever) link back to some file under /dev. See my previous post in this thread.

Thank you. I found the "by-id" and "by-path" sub-directories in /dev/disk, so I take it that one of the files in there would refer to the camera.

What I want to find out how to do, is how to navigate to the directory that shows up in Dolphin as "Canon Digital IXUS 70 (PTP mode)" when I click on the pop-up that appears when I plug the camera in.

IOW, while I can open the camera in Dolphin by clicking on the icon, I am unable to navigate to the camera using Dolphin (or Konsole) after it's mounted.

Sorry if that wasn't clear.

**vinnywright** · Oct 02, 2014, 04:16 PM

to be able to navigate to it you need to know where it is mounted ..........I will use a usb stick ,

after you open it in dolphin it gets mounted by the system (somewhere) you can use

Code:

df -h

to see what is mounted and how much space is used ....................................

so we see that "Cruzer" is mounted at /media/vinny/Cruzer (and if you had dolphins konsole open you would see this already).......................................... ............

and navigating to it gives............................................. ........

this is the same as it will be for your camera

VINNY

**Al1000** · Oct 02, 2014, 05:13 PM

to be able to navigate to it you need to know where it is mounted

Indeed!

this is the same as it will be for your camera

Here is a screenshot of /media/al with all HDD partitions, a usb stick, and the camera mounted; and of the output of

Code:

df -h

Everything except the camera is there.

Attached Files

**jlittle** · Oct 02, 2014, 07:39 PM

Ah ... see that phrase "PTP mode". I don't think that gets a file system mount. It only allows copying from the camera in my experience. MTP was an extension of PTP, and that's what Vinny gets, and it gives a mount in /media/<username>/.

MTP and PTP support is flaky. My Samsung GS3 sometimes works, using MTP, if I access it within a second or so of plugging it in.

Does your camera use an SD card? I have a Canon that does. I bought a cheap (~$10) USB card reader to copy pictures from the SD card.

**Al1000** · Oct 03, 2014, 03:07 AM

Ah ... see that phrase "PTP mode". I don't think that gets a file system mount.

That would explain why I can't navigate to it through the file system! Thanks for that info; I will now mark the thread as solved. I have never heard of MTP or PTP, so will read up on them.

Does your camera use an SD card?

Yes it does. I was considering buying a card reader when I lost the cable that connects the camera to the computer, but fortunately I found it again and it works fine.

**Al1000** · Oct 03, 2014, 04:23 AM

Some relevant info:

By design, MTP devices (like PTP devices) are not treated as a traditional removable drive. The actual file system is implemented by the device, and not by the computer's operating system.

http://en.wikipedia.org/wiki/Media_Transfer_Protocol

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Where is my camera mounted?

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