I cannot get the second miner to work. 

Running start_all produces "Started" but my second miner does not begin to run.  Red light continues to flash.

Could this be a worker issue with the pool I'm connecting to?  Do I need to differentiate the workers somehow with regards to the pool?

Also, when I try to run "screen" the system tells me there are no screens to display.  None of the screen commands yield anything.