Couldn't find device!

Legacy Posts General Questions
1

Anyone get a “Couldn’t find device!” error when trying to flash a program to one of the Alchitry boards (in my case a Cu)?
Sometimes I get “Couldn’t find device!” and sometimes I get:

org.usb4java.LibUsbException: USB error 5: LibUsb.open() failed: Entity not found
at com.alchitry.labs.hardware.usb.UsbDevice.usbFindAll(UsbDevice.java:218)
at com.alchitry.labs.hardware.usb.UsbUtil.getDevice(UsbUtil.java:46)
at com.alchitry.labs.hardware.usb.UsbUtil.openFtdiDevice(UsbUtil.java:91)
at com.alchitry.labs.hardware.loaders.CuLoader.program(CuLoader.java:45)
at com.alchitry.labs.hardware.loaders.ProjectLoader.load(ProjectLoader.java:48)
at com.alchitry.labs.project.Project$8.run(Project.java:1539)

I have tried two different USB-C cables, both confirmed to be data cables and every single USB port and hub on my PC.
Thanks.

2

I wanted to double-check that the driver process was done correctly so I went through and took a look:

Both Interface 0 and 1 have the WinUSB driver and seem fine to me. So idk what else to do to troubleshoot, considering this is completely new hardware and I have almost no experience.

3

Did you ever find a solution to this? Just fired up my Cu and received the same error.

4

I ended up working with the board on a different PC, so I don’t have a good answer…Maybe some conflicting USB devices on the original PC…

5

it’s weird because I’ve literally just reinstalled windows - will try a few other things I guess!

update: Zadig seems to have fixed it - had some other driver than the WinUSB one. I feel like I know what I’m doing, almost!

6

I still get the “Couldn’t find device” Error on GNU/Linux Debian 10 even though lsusb recognizes it.

7

You showed the screenshot, but did you click the “reinstall drivers” button? I had to do that after I upgraded Windows.