topic Hi Steve, in Software Archive

No light on device & SDK apps error

Garry_P_ — Tue, 25 Nov 2014 21:10:40 GMT

HI,

No light on device and get the error "Failed to locate any video stream(s)"

Event error:

Application: face_tracking.cs.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.ArgumentNullException
Stack:
at System.Collections.Generic.Dictionary`2[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].FindEntry(System.__Canon)
at System.Collections.Generic.Dictionary`2[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TryGetValue(System.__Canon, System.__Canon ByRef)
at face_tracking.cs.FaceTracking.SimplePipeline()
at face_tracking.cs.MainForm.DoTracking()
at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
at System.Threading.ThreadHelper.ThreadStart()

Was there ever a light on the

Colleen_C_Intel — Tue, 25 Nov 2014 21:15:37 GMT

Was there ever a light on the device (underneath by the cable plug-in)? Can you try another cable?

Garry_P_ — Tue, 25 Nov 2014 21:20:58 GMT

Not underneath, first time I did connect it to the laptop I had a green light at the front next to the camera

The Firmware software says no device connected, and all the example apps carsh when I try running them

I would try a different cable

Colleen_C_Intel — Tue, 25 Nov 2014 21:29:17 GMT

I would try a different cable or play around a little bit with the cable position into the camera jack (very carefully).

It's a fixed cable into the

Garry_P_ — Tue, 25 Nov 2014 21:33:17 GMT

It's a fixed cable into the device and USB at the other end so can't do much, would Intel not send me another one and I send this back?

Can't do the dev challenge without this?

Hi Garry,

daflippers — Wed, 26 Nov 2014 07:32:19 GMT

Hi Garry,

Look in device manager to check the camera is seen by PC. If you have it USBview will give you more information. It could be:

'Dead' camera - could be bad cable or bad camera
No or incorrect driver loaded - Device manager will tell you this. Disconnect the camera and the list should change. Reconnect and the list should update. If it does that then USB is working but not correctly configured and if it doesn't then look at 1 being the issue.
something else - unlikely as 1 and 2 will probably cover the fault

David

When you check Device manager

steve-vink — Wed, 26 Nov 2014 08:52:23 GMT

When you check Device manager, there should be three entries, not just one. "Camera Driver" seems to appear in Device Manager quite happily, even when the camera is not functional.

My experience was that I had to try 3 USB ports before it sprang into life.

Hi Steve,

daflippers — Wed, 26 Nov 2014 09:01:55 GMT

Hi Steve,

My point was that if it appears in Device manager the camera isn't completely dead although there may be a problem with the driver or initialisation. There might be an issue with the USB enumeration process or insufficient endpoint support etc. and USBview will give information such as endpoints, usage page etc. which might be of use to Intel.

David

Hi David,

steve-vink — Wed, 26 Nov 2014 09:06:29 GMT

Hi David,

just adding my experience to the discussion, I fully agree with your process for troubleshooting ;) I was fooled by the single entry in Device Manager, and only by chance did I see two more entries pop up when I switched USB port.

I'll be looking into your recommendation of USBView, one of my problems when setting up was not knowing which of my ports were USB 3, and not knowing how to work it out.

Hi Steve,

daflippers — Wed, 26 Nov 2014 09:23:19 GMT

Hi Steve,

I didn't mean any offence. I have certainly seen USB issues resolved by unplugging the device from one port and plugging it into another because of driver issues. This may be such a case.

David