I connected FA-CAM202 ( 2M USB cam provided by FriendlyArm) to USB2 pins on Nanopi Duo, 

The OS is  Armbian Bionic mainline kernel 4.14.y

The V4l applications output error as 

  Unable to start capture: Input/output error                                                     
   i: Error grabbing frames

The dmesg shows 

  uvcvideo: Failed to query (GET_CUR) UVC control 3 on unit 1: -32

  uvcvideo: Failed to set UVC commit control : -32 (exp. 26)

 

This Cam FA-CAM202 is worked on PC while other USB CAM such as Logitech works on the same

configuration of Nanopi Duo, on USB2.  

 

It is more like a driver compatibility issues, do we have parameters to try or something else we can let

the UVC CAM which worked on PC run on Armbian ?

 

Tks

Edited November 15, 20187 yr by philip

I've had success with NanoPi Duo v1.1 and using the OTG port. I power off the rail instead of OTG port. The thing is I use the FriendlyElec DTB as the Armbian one doesn't support the OTG port. Now I'm using a different USB camera than you, but that may give you some config ideas. Also, I'd try the official FriendlyElec image and make sure it works.