Dell Precision 5510 - Arch Linux - ACPI DSDT SSDT (Bios 1.6.1)

arch-linux-dsdt-ssdt-dell-precision-5510

## Boot normally and extract the DSDT tables
cp -R /sys/firmware/acpi/tables/DSDT DEST

## Create workbench folder which contains all SSDT and DSDT extracted files renamed with .aml extension
cd DEST
mkdir workbench
cp DSDT SSDT* workbench/
cp dynamic/SSDT* workbench/

## Rename all files in workbench to *{,.aml}
cd workbench/
find -type f | xargs -I % sh -c 'cp %{,.aml}'

## create refs.txt file in workbench folder with contents (see file)
touch refs.txt

## Decompile DSDT using refs text
iasl -da -dl -fe refs.txt DSDT.aml SSDT*.aml

## Around line ~3955 replace the following code
If (LEqual (PM6H, One))
                {
                    CreateBitField (BUF0, \_SB.PCI0._Y0C._RW, ECRW)  // _RW_: Read-Write Status
                    Store (Zero, ECRW (If (PM0H)
                            {
                                CreateDWordField (BUF0, \_SB.PCI0._Y0D._LEN, F0LN)  // _LEN: Length
                                Store (Zero, F0LN)
                            }))
                }

## With the following code
If (LEqual (PM6H, One))
                {
                    CreateBitField (BUF0, \_SB.PCI0._Y0C._RW, ECRW)  // _RW_: Read-Write Status
                    Store (Zero, ECRW)
                }
If (PM0H)
                            {
                                CreateDWordField (BUF0, \_SB.PCI0._Y0D._LEN, F0LN)  // _LEN: Length
                                Store (Zero, F0LN)
                            }


## Comment out the following lines ~18556
/*If (LEqual (DPTF, One))
                {
                    _E42 ()
                }*/

## Recompile now, should do so without any errors, though a ton of warnings
iasl -tc DSDT.dsl

## If compiled without any errors, make sure to increment the version otherwise will not be able to hav kernel override load as needed
## Edit Definition block Line 21, incrememnt the last hex value
DefinitionBlock ("", "DSDT", 2, "DELL  ", "CBX3   ", 0x0107200C)

# Recompie again, this tine with the incremented DefinitionBlock
iasl -tc DSDT.dsl

## Using CPIO to override the DSDT tables at boot
mkdir -p kernel/firmware/acpi

## Copy all .aml files to the newly created folder for teh CPIO override
cp DSDT.aml SDDT*.aml kernel/firmware/acpi

## Create the acpi_override file, this creates the CPIO archive containing the fixed ACPI tables.
find kernel | cpio -H newc --create > acpi_override

## Copy the archive to the boot directory.
cp acpi_override /boot

## Lastly configure bootloader to load override
vim /boot/loader/entries/arch-zen-lvm.conf

## Add the following initrd line after intel ucode initrd
initrd   /acpi_override

## Also make sure to pass the following kernel parameter in boot options
ACPI_TABLE_UPGRADE=y

## Reboot and verify override is being loaded
journalctl -b -k | ag ACPI

## Look for following lines or similar
Feb 25 12:51:23 archlinux kernel: ACPI: Table Upgrade: override [DSDT-DELL  - CBX3   ]
Feb 25 12:51:23 archlinux kernel: ACPI: DSDT 0x0000000038C77228 Physical table override, new table: 0x0000000038236AD6
Feb 25 12:51:23 archlinux kernel: ACPI: DSDT 0x0000000038236AD6 021188 (v02 DELL   CBX3     0107200C INTL 20180105)

arch-zen-lvm.conf

## /boot/loader/entries/arch-zen-lvm.conf

title Arch Linux Zen (LVM)
linux /vmlinuz-linux-zen
initrd /intel-ucode.img
initrd /acpi_override_3
initrd /initramfs-linux-zen.img
options rw rd.luks.uuid=145628bb-0138-4b8b-bc94-2d041c756539 rd.luks.name=145628bb-0138-4b8b-bc94-2d041c756539=lvm root=/dev/mapper/lvmvg-root resume=/dev/mapper/lvmvg-swap scsi_mod.use_blk_mq=y dm_mod.use_blk_mq=y kernel.nmi_watchdog=0 i915.disable_power_well=0 ACPI_TABLE_UPGRADE=y quiet

links-references

## Gentoo forums
https://forums.gentoo.org/viewtopic.php?t=122145

## Arch forums
https://wiki.archlinux.org/index.php/DSDT

## TonyMacx86 
https://www.tonymacx86.com/threads/guide-patching-laptop-dsdt-ssdts.152573/

## Kernel.org bug tracker for ACPI report
https://bugzilla.kernel.org/show_bug.cgi?id=109511

refs.txt

External(MDBG, MethodObj, 1)
External(_GPE.MMTB, MethodObj, 0)
External(_SB.PCI0.LPCB.H_EC.ECWT, MethodObj, 2)
External(_SB.PCI0.LPCB.H_EC.ECRD, MethodObj, 1)
External(_SB.PCI0.LPCB.H_EC.ECMD, MethodObj, 1)
External(_SB.PCI0.PEG0.PEGP.SGPO, MethodObj, 2)
External(_SB.PCI0.GFX0.DD02._BCM, MethodObj, 1)
External(_SB.PCI0.SAT0.SDSM, MethodObj, 4)
External(_GPE.VHOV, MethodObj, 3)
External(_SB.PCI0.XHC.RHUB.TPLD, MethodObj, 2)