With normal receptacle at first device in circuit all works fine--all lights and both receptacles. (I inherited the circuit--didn't do it myself.)
I thought, "Why not install a GFCI as first device?" to provide protection to the two receptacles that are the 3rd and 4th devices in the circuit.
Well, neither of two NEW GFCIS even acknowledge that there is current being supplied to them. (I assure you that there is 120v there.)
A friend wasn't sure but guessed that the GFCIs are saying "I can't help you with lights; receptacles only."
I obviously didn't know that, but it makes sense. There's no way to provide GFCI protection for lights anyway (I assume).
I've Googled a fair amount and followed many links, but have yet to find someone saying "GFCI is wired to not let this situation work." Every one either "it's okay but it's against code so don't do it" or similar hedging.
Whatever, I'm going back to the normal receptacle where I was on Monday with everything working. BTW, a GFCI tester showed no red and two yellows, which means "CORRECT" for this particular tester.
My only question is: forget code for the moment--should the two GFCIs have worked?