Hello!

Could you please help me to understand why my digital camera (Canon Ixus 80 IS) appears in Device Notifier as non-removable device?

If in Device Notifier Settings the option 'Removable devices only' selected I haven't got camera in the list but if I select 'Non-removable devices only' camera appears in the list. I am pretty sure camera is more removable than non-removable.

Best regards.

Is your camera accessed through USB Storage or a protocol like MTP? In the latter case, it works differently.

einar wrote:USB Storage or a protocol like MTP?

I believe it accessed via protocol because then plugged in, dmesg displays only (with no information about partitions):

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[ 1945.616498] usb 1-1: new high-speed USB device number 4 using ehci_hcd

Also, libgphoto2 can access camera and Dolphin displays camera content with 'camera:/' prefix in the path.

IF you access it through camera:/ it's likely not configured as USB Mass Storage. Many cameras use stuff like MTP protocol which doesn't enable them to be used as "disks" directly (and since a while - mine, bought in 2007, already works like that). You could check by using a program like Digikam.
Gphoto and camera:/ use an abstraction to be able to access the camera like a disk, or a browsable device.

Thanks for reply! Is it possible to make camera appears in 'removable devices' in Device notifier (because it makes sense and it's useful to access camera via Device notifier). Setting Device notifier to 'all devices' seems uncomfortable because I don't need always see my hard drive partitions in the list.

I think you can do that in the device actions KCM, but I'm not sure (I never used this feature).

The control over the "removable" status of a device rests with UDisks and it's decisions I believe. It may also be affected by UDev rules.

Try running "solid-hardware query 'IS StorageDrive'" and check that output for your camera, then run "solid-hardware details <udi>"

For example, I did the following (although I was checking my laptop hard disk instead as I have no camera around at the moment)

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ben@bianca:~/kdesvn/kde/kde-workspace> solid-hardware query 'IS StorageDrive'
udi = '/org/freedesktop/UDisks/devices/sda'
udi = '/org/freedesktop/UDisks/devices/sr0'
ben@bianca:~/kdesvn/kde/kde-workspace> solid-hardware details /org/freedesktop/UDisks/devices/sda