"unable to open device" of USB3 vision device

General Questions
1

I installed Common Vision Blox and try to get a connection to my USB3 vision camera (Go5100M-USB). When I open the GenICam Browser and use “Discover” (or Ignore Subnet Discover), I get the error message “ERROR USB3 Vision device (unidentified) : Failed to open device due to std::exception: cvFactoryXX::Interface::OpenDevice - Unable to open Device - with error code: -1001”

It looks like this:

image
image866×278 15.7 KB

It recognizes there is a camera, but has no access or any information about it. When I use another tool (eBUS Player for JAI), I can see the video stream.

In the documentation I read that the red camera symbol means the camera is already in use. But I also restarted the whole system to be sure nothing is still running in the background and I could not fix it.

In another thread someone wrote to have a look at the output of lsual.exe
If I try this I get the message
Driver Type: unknown or no driver (version: 10.0.22621.4391)
I don’t know what kind of driver is failing as I installed them and the camera is working with the other tool.

Has anyone an idea how to fix this? If anyone has an idea I would be very grateful for help.

2

Maybe you skipped the u3v driver installation. In %CVB%\Hardware\StemmerImaging\siu3v\ there is an executable called dpinst.exe . Try to call this to install the usb driver.

3

Hi @user0815,

additionally, I can say that this is a very common issue you will have if different software tools are installed including their own USB driver like the ebus SDK.

We can’t influence the priority which driver is picked by windows to be used for a new device. In our case the wrong driver was used, or it was not installed at all as @s-woe wrote.

We added a how-to Guide into our documentation to show what need to be done to choose the driver used by CVB.
This is a direct link to it:
https://help.commonvisionblox.com/NextGen/14.1/md_theory_of_operation_hardware__u_s_b3_vision.html#gcug_usb3_how_to_guide