bugcheck (wrong connector dpms state)

Hi

I'm experiencing kernel bugcheck with DRM driver.

The kernel output reports various reasons:

1) wrong connector dpms state

2) encoder->connectors_active not set

3) crtc not active

4) encoder's hw state doesn't match sw tracking

 

I'm working with 3.14.3-rt5 on BayTrail module with my carrier board.

For some reason I get this bugcheck without doing nothing special. The system just loads and waits but no more.

On a different carrier board I don't get this bugcheck.

What does this bugcheck means?

I've attached the bugcheck output.

 

Best regards,

Tal