Ok, so I found a few older threads on this, but no tips in them seem to work in my case. I can't seem to get my S4 to see the PC/USB connection and prompt to select Media Device or the like. The USB icon never even appears in the notification bar. The PC recognizes connection (USB tone sounds) and shows device ready to use, but phone never gives the option. Doesn't seem to matter if USB Debugging is checked or not, or anything else that I can find so far. Here's the things I can generally eliminate:
2 different USB cables worked on wife's S4 on two different PCs. Neither cable or PC worked with my S4
Tried reinstalling Samsung USB drivers just to be sure
Cold booted phone
Tried unchecking and re-checking USB debugging (also tried with it unchecked)
So when we take in working fine on wife's S4, I'd generally guess that we can eliminate cable and PC from the potential problem list. Phone is currently on stock rom, but rooted. Outside of that and freezing VZ Support, Knox, and VZ Tones, no other modifications to the OS. At this point, I'm pretty stumped. Any suggestions on other steps to try?