A boot error message has begun showing up on my laptop since I upgraded to the current 22.04.1 LTS release. I had previously been running the 20.04 release. The error message that appears on my laptop screen right after I power up is as follows:
0.146474] DMAR: [Firmware Bug1: No firmware reserved region can cover this RMRR [0x000000009d800000-0x000000009fffffffl, contact BIOS vendor for fixes [ 0.559347] ACPI BIOS Error (bug): Could not resolve symbol [_SB.PCIO.LPCB.H
EC.ECRD1, AE_NOT_FOUND (20210730/psargs-330)
[ 0.5593801 ACPI Error: $ due to previous error (AE_NOT_FOUND) (20210730/psparse-529)
[ 0.5597301 ACPI BIOS Error (bug): Could not resolve symbol [_SB.PCIO.LPCB.H EC.ECRD1, AE_NOT_FOUND (20210730/psargs-330) [ 0.5597571 ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error
(AE_NOT_FOUND) (20210730/psparse-529) [ 0.559916] ACPI BIOS Error (bug): Could not resolve symbol [_SB.PCIO.LPCB.H
EC.ECRD), AE_NOT_FOUND (20210730/psargs-330)
[ 0.5599401 ACPI Error: Aborting method _TZ.TZ01._TMP due to previous error
(AE_NOT_FOUND) (20210730/psparse-529)
[ 0.560087] ACPI BIOS Error (bug): Could not resolve symbol [_SB.PCIO.LPCB.H EC.ECRD), AE_NOT_FOUND (20210730/psargs-330) [ 0.560111] ACPI Error: Aborting method _TZ. T201._TMP due to previous error
(AE_NOT_FOUND) (20210730/psparse-529)
/dev/sda2: clean, 533199/61022208 files, 45401086/244059136 blocks
My laptop is an HP 250 G5 model. Thanks for your help.
