I'm using the STM32 IDE, create a new project, and the project wizard pops up. When I choose the eval board, i get an empty project that has many HAL initialization calls in the main. Unfortunately some of the HAL calls (eMMC init, USB init) hang, and the end of the main function is not reached. This is problem number 1. Then when i try to setup printf myself, or load the printf example, i can't get any output via the virtual serial port from ST-LINK USB port.
I have *no* problems with the STM32F769I-DISCO! So my environment is setup ok in general.