Comment 5 for bug 1978398

I received the same sequence of ACPI errors. While I have no idea as to whether the ACPI errors are due to a bug in the ACPI package or if the errors are due to bad programming by my motherboard manufacturer (Lenovo or its subcontractor), nor do I know if this particular error is of any importance (I've found many ACPI errors do not result in any noticeable adverse effects), what I do know is that these errors are shown during quiet kernel bootup, and I'd prefer they weren't. :-)

Basic information about my system:
- Device: Lenovo Thinkpad P17
- Model: 20YU0066US
- BIOS: N37ET39W (1.20 ) [Released 04/15/2022]
- Device URL: https://www.lenovo.com/us/en/p/laptops/thinkpad/thinkpadp/thinkpad-p17-gen-2-(17-inch-intel)-mobile-workstation/20yu0066us

More specifically, the following kernel ring buffer messages break through the "quiet" and "splash" kernel CLI options (as defined by GRUB_CMDLINE_LINUX variable in /etc/defaults/grub) and show up prior to kernel modesetting and the plymouth splash:

[ 0.733848] ACPI BIOS Error (bug): Failure creating named object [\_SB.PC00.SAT0.PRT0.PWRG], AE_ALREADY_EXISTS (20210730/dswload2-326)
[ 0.733868] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20210730/psobject-220)
[ 1.094250] pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid
[ 1.098637] pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid

Note that the ACPI messages above (that break through the "quiet" boot option) are not sequential in the kernel ring buffer messages; as such, I've provided my complete dmesg output after boot: https://pastebin.ubuntu.com/p/GB2YKXP8mw/.

Per the ACPI bug reporting docs (https://wiki.ubuntu.com/DebuggingACPI#Filing_a_Bug_Report), the following is a collection of system details:

- lsb_release -a:
  Distributor ID: Ubuntu
  Description: Ubuntu 22.04 LTS
  Release: 22.04
  Codename: jammy

- uname -a:
  Linux ptf 5.15.0-39-generic #42-Ubuntu SMP Thu Jun 9 23:42:32 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

- sudo lspci -vvnn:
  https://pastebin.ubuntu.com/p/KVXnRjprC7/

- sudo dmidecode:
  https://pastebin.ubuntu.com/p/B4j82XNMZv/

- sudo dmesg:
  https://pastebin.ubuntu.com/p/GB2YKXP8mw/

- sudo dpkg -l:
  https://pastebin.ubuntu.com/p/2mgqzw9v86/

Please advise if any additional information would be helpful.