Blacklist the simatic_ipc kernel module and you should be good to go. The kernel option module_blacklist=simatic_ipc should help with that.
The kernel module locks up as it tries loading and as a udev-worker process it keeps a CPU core busy while also preventing the system to shutdown properly.
The mainboard inside the IPC547C is a Fujitsu D2836, providing an Intel 775 platform with a Q43/Q45 chipset.
BIOS updates can be found at: [https://support.industry.siemens.com/cs/document/109763408/bios-firmware-downloads-for-simatic-ipcs-simatic-tablet-pcs-simatic-field-pgs-sinumerik-pcu-and-simotion-p320](https://support.industry.siemens.com/cs/document/109763408/bios-firmware-downloads-fo


