ACPI PCC probe failed
radeon 0000:01:00.0: Invalid ROM contents
[drm:ci_dpm_init [radeon]] *ERROR* Invalid PCC GPIO: 13!

Busybox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) Unable to find a medium containing a live file system