@diderius6
I can confirm that the modded DSDT Table was loaded using grub2 by checking the log file after I booted into ubuntu
Oct 14 23:19:54 ubuntudde kernel: [ 0.000000] ACPI: DSDT 0x00000000AB21DE50 00E5C3 (v02 AMD A M I 03242016 INTL 20121114)
I still have ACPI errors but at least I know the modded table loaded successfully.