I am a new user of Ubuntu. Recently I installed Ubuntu 22.04 (Jammy Jellyfish). The problem is when I turn on my pc every time there show some errors at booting time. I mentioned the problems down below:

ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GP17.VGA.LCD._BCM.AFN7], AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_SB.PCI0.GP17.VGA.LCD._BCM due to previous error (AE_NOT_FOUND) (20210730/psparse-529)

Why do these errors occur and how to solve them?

  • 2
    Does this answer your question? ACPI error messages during boot Apr 28, 2022 at 10:26
  • Show me sudo dmidecode -s bios-version, and tell me the EXACT make/model of your computer or motherboard. What video card/display do you have? Nvidia? Start comments to me with @heynnema or I'll miss them.
    – heynnema
    Apr 28, 2022 at 12:06
  • @heynnema My computer motherboard model is ASRock B450 Steel Legend and the processor is AMD Ryzen 3 3200G. I don't have a video card. The command gave the output "P3.70". Apr 29, 2022 at 2:26
  • @FoyezNaeem There's a much newer BIOS available at asrock.com/mb/amd/b450m%20steel%20legend/#BIOS1. Read ALL of the instructions! See the CPU Support List to determine your CPU model... I think you have Pinnacle. Have good backups before updating the BIOS.
    – heynnema
    Apr 29, 2022 at 2:33


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