I am running using HP Z840 system with Ubuntu. DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04.3 LTS" KERNEL=6.2.0-37-generic During boot there appear many ACPI errors as bellow: kern :err : [ +0,279045] ACPI Error: Needed [Buffer/String/Package], found [Integer] 000000001fdbe261 (20221020/exresop-557) kern :err : [ +0,000044] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [Index] (20221020/dswexec-433) kern :warn : [ +0,000033] Initialized Local Variables for Method [WVPO]: kern :warn : [ +0,000002] Local1: 0000000091d4ba10 <Obj> Buffer(12) 00 00 00 00 00 00 00 00 kern :warn : [ +0,000012] Initialized Arguments for Method [WVPO]: (2 arguments defined for method invocation) kern :warn : [ +0,000001] Arg0: 000000001334f38c <Obj> Integer 0000000000000004 kern :warn : [ +0,000005] Arg1: 000000001fdbe261 <Obj> Integer 0000000000000000 kern :err : [ +0,000007] ACPI Error: Aborting method \_SB.WMIV.WVPO due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,000038] ACPI Error: Aborting method \_SB.WMIV.WMPV due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,001796] ACPI Error: Needed [Buffer/String/Package], found [Integer] 00000000270b15af (20221020/exresop-557) kern :err : [ +0,000039] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [Index] (20221020/dswexec-433) kern :warn : [ +0,000036] Initialized Local Variables for Method [WVPO]: kern :warn : [ +0,000001] Local1: 000000008a4ef1f5 <Obj> Buffer(12) 00 00 00 00 00 00 00 00 kern :warn : [ +0,000012] Initialized Arguments for Method [WVPO]: (2 arguments defined for method invocation) kern :warn : [ +0,000002] Arg0: 00000000b4299ba4 <Obj> Integer 0000000000000004 kern :warn : [ +0,000004] Arg1: 00000000270b15af <Obj> Integer 0000000000000000 kern :err : [ +0,000008] ACPI Error: Aborting method \_SB.WMIV.WVPO due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,000037] ACPI Error: Aborting method \_SB.WMIV.WMPV due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,001635] ACPI Error: Needed [Buffer/String/Package], found [Integer] 000000007f4ccd3b (20221020/exresop-557) kern :err : [ +0,000033] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [Index] (20221020/dswexec-433) kern :warn : [ +0,000031] Initialized Local Variables for Method [WVPO]: kern :warn : [ +0,000001] Local1: 000000007d9c8ee5 <Obj> Buffer(136) 00 00 00 00 00 00 00 00 kern :warn : [ +0,000012] Initialized Arguments for Method [WVPO]: (2 arguments defined for method invocation) kern :warn : [ +0,000001] Arg0: 00000000783367e9 <Obj> Integer 0000000000000080 kern :warn : [ +0,000005] Arg1: 000000007f4ccd3b <Obj> Integer 0000000000000000 kern :err : [ +0,000006] ACPI Error: Aborting method \_SB.WMIV.WVPO due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,000037] ACPI Error: Aborting method \_SB.WMIV.WMPV due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :info : [ +0,000603] input: HP WMI hotkeys as /devices/virtual/input/input11 kern :err : [ +0,001601] ACPI Error: Needed [Buffer/String/Package], found [Integer] 000000001fb796e3 (20221020/exresop-557) kern :err : [ +0,000034] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [Index] (20221020/dswexec-433) kern :warn : [ +0,000035] Initialized Local Variables for Method [WVPO]: kern :warn : [ +0,000001] Local1: 00000000d9d06f29 <Obj> Buffer(136) 00 00 00 00 00 00 00 00 kern :warn : [ +0,000014] Initialized Arguments for Method [WVPO]: (2 arguments defined for method invocation) kern :warn : [ +0,000003] Arg0: 00000000f8c1a6cd <Obj> Integer 0000000000000080 kern :warn : [ +0,000005] Arg1: 000000001fb796e3 <Obj> Integer 0000000000000000 kern :err : [ +0,000008] ACPI Error: Aborting method \_SB.WMIV.WVPO due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529) kern :err : [ +0,000037] ACPI Error: Aborting method \_SB.WMIV.WMPV due to previous error (AE_AML_OPERAND_TYPE) (20221020/psparse-529)