PanjaNL wrote: ↑
Wed Sep 05, 2018 9:28 am
Once I get home tonight I will try a fresh install of RetroPie or/and Rasbian without
the safe shutdown script (UART disabled that way) and report back.
You might not have to do a complete reinstall, may just be able to edit config.txt.
I ran raspi-config on my 3B, disabled UART, rebooted, and my core_freq is back to the expected 400.
You should be able to use the UART and have core_freq=400 by setting force_turbo if my reading of the documentation is right -
"The Linux console can be re-enabled by adding enable_uart=1 to config.txt. This also fixes the core_freq to 250Mhz (unless force_turbo is set, when it will fixed to 400Mhz), which means that the UART baud rate stays consistent".
https://www.raspberrypi.org/documentati ... on/uart.md
I haven't read the full documentation and don't have a good understanding of what all the clocking options are or mean so have no idea what any other consequence of setting force_turbo might be.