> I'm seeing the same *ERROR* lines on suspend/resume on one of my laptops, and 
> the laptop panel stays black. Does that match your problem, or what did you 
> mean by "broke the handling of power management"?

For the former, that matches the problem I encountered. 
About the line "broke the handling of power management", I noticed more fan
noise than usual but it may be something else. It will be nice to optimize that
power management if possible.