On Thu, Apr 09, 2020 at 12:42:10AM -0400, Damon Lynch wrote:
> Hi,
>
> Whether through mistake or by design, I realized only today that GVFS
> blocks having more than one camera using the same ID_SERIAL value (I'm
> not sure what that value is; I assume it's the brand).
>
> In practice that seems to mean forget being able to plug in two Canon
> cameras under Gnome, because only one will be recognized. I hope
> that's not deliberate on Gnome's behalf! Some sample output from
> journalctl detailing the error is below.
>
> While I could just go ahead and file a bug report against GVFS, I fear
> it would be lost amidst a sea of other bug reports that the Gnome devs
> have to deal with. Is there someone in Gnome who can be shoulder
> tapped to take a look at it?
>
> Thanks,
> Damon
>
> kernel: usb 5-4: new high-speed USB device number 11 using xhci_hcd
> kernel: usb 5-4: New USB device found, idVendor=04a9, idProduct=3219,
> bcdDevice= 0.02
> kernel: usb 5-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> kernel: usb 5-4: Product: Canon Digital Camera
> kernel: usb 5-4: Manufacturer: Canon Inc.
> mtp-probe[3587]: checking bus 5, device 11:
> "/sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:08.0/0000:06:00.3/usb5/5-4"
> mtp-probe[3587]: bus: 5, device: 11 was not an MTP device
> gvfs-gphoto2-vo[1746]: device /dev/bus/usb/005/011 has an identical
> ID_SERIAL value to an existing device. Multiple devices are not
> supported.
> colord[2455]: CdMain: failed to emit DeviceAdded: failed to register
> object: An object is already exported for the interface
> org.freedesktop.ColorManager.Device at
> /org/freedesktop/ColorManager/devices/sysfs_Canon_Inc__Canon_Digital_Camera
> colord[2455]: CdMain: failed to emit DeviceAdded: failed to register
> object: An object is already exported for the interface
> org.freedesktop.ColorManager.Device at
> /org/freedesktop/ColorManager/devices/sysfs__null_
Cameras usually report their serial ids and udev should pick them up,
and they are unique.
I am getting here for a powershot:
ID_SERIAL=Canon_Inc._Canon_Digital_Camera_C1F97548F24F4006CB1541A312A50CB9
ID_SERIAL_SHORT=C1F97548F24F4006CB1541A312A50CB9
Can you check with
udevadm monitor -p
and look for ID_SERIAL
if it is generating unique ids or any ids at all?
JUding from the ColorManager entry it might not emit this serial?
Ciao, Marcus
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