piVCCU: Can't get piVCCU working for RPI-RF-MOD

I do know piVCCU should be working with HMRPI-RF-MOD, so I must be doing something wrong. I just got a fresh HMRPI-RF-MOD delivered and wanted to tinker with it and my RPi 3B.

I have followed the steps outlined at https://github.com/alexreinert/piVCCU/blob/master/docs/setup/raspberrypi.md. The problem is that piVCCU just doesn’t start and doesn’t recognize the hardware. I do see the AMA0 device though - should I somehow test a raw serial connection?

Before playing around with a million things I got an installation error on a subroutine with status code 255. pivccu-info showed “lxc doesn’t exist” and no HMRF hardware. I now played around some more (see bottom for things I have tried) and have a weird /dev/raw_uart5 for “connected via” which looks wrong.

ls -l /dev/ttyAMA0 crw--w---- 1 root tty 204, 64 Nov 30 23:22 /dev/ttyAMA0

ls -l /dev/serial*

lrwxrwxrwx 1 root root  7 Nov 30 23:22 /dev/serial0 -> ttyAMA0
lrwxrwxrwx 1 root root  5 Nov 30 23:22 /dev/serial1 -> ttyS0

pivccu-info

piVCCU version: 3.53.34-49
Kernel modules: Available
Raw UART dev:   Available
Rasp.Pi UART:   Assigned to GPIO pins
HMRF Hardware:  unknown
 Connected via:  (/dev/raw-uart5)
 Board serial:  unknown
 Radio MAC:     unknown
HMIP Hardware:  unknown
 SGTIN:         unknown
 Radio MAC:     unknown
State:          STOPPED

/boot/cmdline.txt dwc_otg.lpm_enable=0 console=tty1 root=PARTUUID=53e33d80-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait

more /boot/config.txt | grep -Ev “^([#\s])”

 hdmi_force_hotplug=1
 
 dtoverlay=pi3-disable-wifi
 
 dtparam=eth_led0=14
 dtparam=eth_led1=14
 
 dtparam=pwr_led_trigger=none
 dtparam=pwr_led_activelow=off
 
 dtparam=act_led_trigger=none
 dtparam=act_led_activelow=off
 
 enable_uart=1
 core_freq=250
 dtoverlay=pi3-miniuart-bt
 
 dtoverlay=pivccu-raspberrypi

sudo dpkg --get-selections | grep pivccu

pivccu-modules-dkms                             install
pivccu-modules-raspberrypi                      install
pivccu3                                         install

systemctl status pivccu.service

● pivccu.service - piVCCU
   Loaded: loaded (/lib/systemd/system/pivccu.service; enabled; vendor preset: enabled)
   Active: failed (Result: resources) since Mon 2020-11-30 23:09:01 CET; 2min 41s ago
  Process: 782 ExecStart=/var/lib/piVCCU3/start_container.sh (code=exited, status=0/SUCCESS)
      CPU: 531ms

Nov 30 23:08:25 raspberrypi start_container.sh[782]: <12>Nov 30 23:08:25 piVCCU3: HMIP hardware was not detected
Nov 30 23:08:26 raspberrypi start_container.sh[782]: kernel.sched_rt_runtime_us = -1
Nov 30 23:08:31 raspberrypi start_container.sh[782]: lxc-start: tools/lxc_start.c: main: 366 The container failed to start.
Nov 30 23:08:31 raspberrypi start_container.sh[782]: lxc-start: tools/lxc_start.c: main: 368 To get more details, run the container in foregro
Nov 30 23:08:31 raspberrypi start_container.sh[782]: lxc-start: tools/lxc_start.c: main: 370 Additional information can be obtained by setting
Nov 30 23:08:31 raspberrypi systemd[1]: pivccu.service: PID file /var/run/pivccu3.pid not readable (yet?) after start: No such file or directo
Nov 30 23:09:01 raspberrypi systemd[1]: pivccu.service: Daemon never wrote its PID file. Failing.
Nov 30 23:09:01 raspberrypi systemd[1]: Failed to start piVCCU.
Nov 30 23:09:01 raspberrypi systemd[1]: pivccu.service: Unit entered failed state.
Nov 30 23:09:01 raspberrypi systemd[1]: pivccu.service: Failed with result 'resources'.

brctl show

bridge name     bridge id               STP enabled     interfaces
br0             8000.b827eb7ba851       no              eth0
docker0         8000.0242ea3ede4d       no

I have already tried the following to no avail:

 sudo apt-get install --reinstall raspberrypi-bootloader raspberrypi-kernel
 sudo apt install lxc bridge-utils systemd
 <reboot>
 sudo apt-get install --reinstall pivccu-modules-raspberrypi
 <reboot>
 sudo apt-get install --reinstall pivccu3

I have tried force_turbo and core_freq in the boot config.