Remove pcie_ports=native and add pm_async=off

Author: AdityaGarg8

files/grub/grub.cfg

@@ -7,18 +7,18 @@ set default="0"
 set timeout=30
 
 menuentry "Try or Install Ubuntu" {
-   linux /casper/vmlinuz file=/cdrom/preseed/mbp.seed boot=casper ro quiet splash pcie_ports=native intel_iommu=on iommu=pt ---
+   linux /casper/vmlinuz file=/cdrom/preseed/mbp.seed boot=casper ro quiet splash pm_async=off intel_iommu=on iommu=pt ---
    initrd /casper/initrd
 }
 menuentry "Ubuntu (Safe Graphics)" {
-   linux /casper/vmlinuz file=/cdrom/preseed/mbp164.seed boot=casper ro quiet splash nomodeset pcie_ports=native intel_iommu=on iommu=pt ---
+   linux /casper/vmlinuz file=/cdrom/preseed/mbp164.seed boot=casper ro quiet splash nomodeset pm_async=off intel_iommu=on iommu=pt ---
    initrd /casper/initrd
 }
 menuentry "Ubuntu (NVMe blacklisted)" {
-   linux /casper/vmlinuz file=/cdrom/preseed/mbp.seed boot=casper ro quiet splash pcie_ports=native intel_iommu=on iommu=pt modprobe.blacklist=nvme ---
+   linux /casper/vmlinuz file=/cdrom/preseed/mbp.seed boot=casper ro quiet splash pm_async=off intel_iommu=on iommu=pt modprobe.blacklist=nvme ---
    initrd /casper/initrd
 }
 menuentry "Check disc for defects" {
-   linux /casper/vmlinuz boot=casper integrity-check enforcing=0 efi=noruntime pcie_ports=native ---
+   linux /casper/vmlinuz boot=casper integrity-check enforcing=0 efi=noruntime pm_async=off ---
    initrd /casper/initrd
 }

files/preseed/mbp.seed

@@ -8,4 +8,4 @@
 # well keep them installed.
 #ubiquity ubiquity/keep-installed string icedtea6-plugin openoffice.org
 
-d-i debian-installer/add-kernel-opts string pcie_ports=native intel_iommu=on iommu=pt
+d-i debian-installer/add-kernel-opts string pm_async=off intel_iommu=on iommu=pt

files/preseed/mbp164.seed

@@ -8,4 +8,4 @@
 # well keep them installed.
 #ubiquity ubiquity/keep-installed string icedtea6-plugin openoffice.org
 
-d-i debian-installer/add-kernel-opts string pcie_ports=native intel_iommu=on iommu=pt nomodeset
+d-i debian-installer/add-kernel-opts string pm_async=off intel_iommu=on iommu=pt nomodeset