I performed some additional investigation on the affected machine. The errors reproduce on the current boot. For each of SEN1–SEN4, evaluation of the static thermal trip methods fails because the referenced objects cannot be resolved:
SEN1._CRT -> S1CT, AE_NOT_FOUND SEN1._HOT -> S1HT, AE_NOT_FOUND SEN1._PSV -> S1PT, AE_NOT_FOUND SEN1._AC0 -> S1AT, AE_NOT_FOUND The same occurs for the corresponding S2*, S3*, and S4* objects. The live ACPI table: /sys/firmware/acpi/tables/SSDT2 contains the AML identifiers SEN1–SEN4 and S1AT/S1PT/S1CT/S1HT through S5AT/S5PT/S5CT/S5HT. However, at runtime the trip-point names are not resolvable when the methods execute. In the decompiled EC field layout I found: S1DE, S2DE, S3DE, S4DE, S5DE S1S3, S2S3, S3S3, S4S3, S5S3 but no corresponding EC field definitions for SxAT, SxPT, SxCT, or SxHT. I also found no Load() or LoadTable() operations in the decompiled tables searched so far. Despite the trip-point failures, the sensor devices are registered and _TMP appears to remain usable: thermal_zone0 acpitz 93000 \_TZ_.THRM thermal_zone1 INT3400 Thermal 20000 thermal_zone2 SEN1 50 thermal_zone3 SEN2 76050 thermal_zone4 SEN3 50 thermal_zone5 SEN4 73050 thermal_zone6 TCPU 92000 thermal_zone7 x86_pkg_temp 92000 SEN2 and SEN4 return plausible temperatures, while SEN1 and SEN3 return approximately 0.05°C, possibly indicating unused sensor channels. Therefore, this does not appear to justify blacklisting all four sensor devices. The current evidence points specifically to malformed or unavailable static trip-point backing objects, while at least some _TMP readings remain useful. A conservative kernel workaround might preserve _TMP and any programmable trip interfaces, while avoiding evaluation of _CRT, _HOT, _PSV, and _ACx for these SEN1–SEN4 participants on this exact model/BIOS. I also attach the live SSDT2, its decompiled DSL, the full acpidump, and complete current-boot kernel log if useful: mkdir -p /tmp/x3500pc-acpi sudo cp /sys/firmware/acpi/tables/DSDT /tmp/x3500pc-acpi/DSDT.aml sudo cp /sys/firmware/acpi/tables/SSDT2 /tmp/x3500pc-acpi/SSDT2.aml sudo chown -R "$USER:$USER" /tmp/x3500pc-acpi cd /tmp/x3500pc-acpi iasl -e DSDT.aml -d SSDT2.aml grep -nE \ 'External.*S[1-5](AT|PT|CT|HT)|SEN[1-5]|S[1-5](AT|PT|CT|HT|DE)|Method \(_(TMP|CRT|HOT|PSV|AC0)' \ SSDT2.dsl Intel ACPI Component Architecture ASL+ Optimizing Compiler/Disassembler version 20230628 Copyright (c) 2000 - 2023 Intel Corporation File appears to be binary: found 5964 non-ASCII characters, disassembling Binary file appears to be a valid ACPI table, disassembling Input file SSDT2.aml, Length 0x4E02 (19970) bytes ACPI: SSDT 0x0000000000000000 004E02 (v02 DptfTa DptfTabl 00001000 INTL 20191018) External object resolution file DSDT.aml Input file DSDT.aml, Length 0x5F763 (391011) bytes ACPI: DSDT 0x0000000000000000 05F763 (v02 _ASUS_ Notebook 01072009 INTL 20191018) Pass 1 parse of [DSDT] Pass 2 parse of [DSDT] Pass 1 parse of [SSDT] Pass 2 parse of [SSDT] Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions) Parsing completed Disassembly completed ASL Output: SSDT2.dsl - 110786 bytes 182: External (S1AT, IntObj) 183: External (S1CT, IntObj) 184: External (S1DE, IntObj) 185: External (S1HT, IntObj) 186: External (S1PT, IntObj) 188: External (S2AT, IntObj) 189: External (S2CT, IntObj) 190: External (S2DE, IntObj) 191: External (S2HT, IntObj) 192: External (S2PT, IntObj) 194: External (S3AT, IntObj) 195: External (S3CT, IntObj) 196: External (S3DE, IntObj) 197: External (S3HT, IntObj) 198: External (S3PT, IntObj) 200: External (S4AT, IntObj) 201: External (S4CT, IntObj) 202: External (S4DE, IntObj) 203: External (S4HT, IntObj) 204: External (S4PT, IntObj) 206: External (S5AT, IntObj) 207: External (S5CT, IntObj) 208: External (S5DE, IntObj) 209: External (S5HT, IntObj) 210: External (S5PT, IntObj) 847: If ((S1DE == One)) 849: Notify (\_SB.PC00.LPCB.EC0.SEN1, 0x90) // Device-Specific 855: If ((S1DE == One)) 857: Notify (\_SB.PC00.LPCB.EC0.SEN1, 0x90) // Device-Specific 869: If ((S2DE == One)) 871: Notify (\_SB.PC00.LPCB.EC0.SEN2, 0x90) // Device-Specific 877: If ((S2DE == One)) 879: Notify (\_SB.PC00.LPCB.EC0.SEN2, 0x90) // Device-Specific 891: If ((S3DE == One)) 893: Notify (\_SB.PC00.LPCB.EC0.SEN3, 0x90) // Device-Specific 899: If ((S3DE == One)) 901: Notify (\_SB.PC00.LPCB.EC0.SEN3, 0x90) // Device-Specific 913: If ((S4DE == One)) 915: Notify (\_SB.PC00.LPCB.EC0.SEN4, 0x90) // Device-Specific 921: If ((S4DE == One)) 923: Notify (\_SB.PC00.LPCB.EC0.SEN4, 0x90) // Device-Specific 1765: Method (_AC0, 0, Serialized) // _ACx: Active Cooling, x=0-9 1835: Method (_PSV, 0, Serialized) // _PSV: Passive Temperature 1840: Method (_CRT, 0, Serialized) // _CRT: Critical Temperature 1850: Method (_HOT, 0, Serialized) // _HOT: Hot Temperature 2240: Device (SEN1) 2243: Name (_UID, "SEN1") // _UID: Unique ID 2251: If ((S1DE == One)) 2261: Method (_TMP, 0, Serialized) // _TMP: Temperature 2310: Notify (\_SB.PC00.LPCB.EC0.SEN1, 0x91) // Device-Specific 2323: Method (_AC0, 0, Serialized) // _ACx: Active Cooling, x=0-9 2327: Local1 = \_SB.IETM.CTOK (S1PT) 2331: Local1 = \_SB.IETM.CTOK (S1AT) 2344: Method (_PSV, 0, Serialized) // _PSV: Passive Temperature 2348: Return (\_SB.IETM.CTOK (S1AT)) 2352: Return (\_SB.IETM.CTOK (S1PT)) 2356: Method (_CRT, 0, Serialized) // _CRT: Critical Temperature 2358: Return (\_SB.IETM.CTOK (S1CT)) 2366: Method (_HOT, 0, Serialized) // _HOT: Hot Temperature 2368: Return (\_SB.IETM.CTOK (S1HT)) 2378: Notify (\_SB.PC00.LPCB.EC0.SEN1, 0x91) // Device-Specific 2401: Notify (\_SB.PC00.LPCB.EC0.SEN1, 0x91) // Device-Specific 2409: Device (SEN2) 2412: Name (_UID, "SEN2") // _UID: Unique ID 2420: If ((S2DE == One)) 2430: Method (_TMP, 0, Serialized) // _TMP: Temperature 2477: Notify (\_SB.PC00.LPCB.EC0.SEN2, 0x91) // Device-Specific 2490: Method (_AC0, 0, Serialized) // _ACx: Active Cooling, x=0-9 2494: Local1 = \_SB.IETM.CTOK (S2PT) 2498: Local1 = \_SB.IETM.CTOK (S2AT) 2526: Method (_PSV, 0, Serialized) // _PSV: Passive Temperature 2530: Return (\_SB.IETM.CTOK (S2AT)) 2534: Return (\_SB.IETM.CTOK (S2PT)) 2538: Method (_CRT, 0, Serialized) // _CRT: Critical Temperature 2540: Return (\_SB.IETM.CTOK (S2CT)) 2548: Method (_HOT, 0, Serialized) // _HOT: Hot Temperature 2550: Return (\_SB.IETM.CTOK (S2HT)) 2560: Notify (\_SB.PC00.LPCB.EC0.SEN2, 0x91) // Device-Specific 2583: Notify (\_SB.PC00.LPCB.EC0.SEN2, 0x91) // Device-Specific 2591: Device (SEN3) 2594: Name (_UID, "SEN3") // _UID: Unique ID 2602: If ((S3DE == One)) 2612: Method (_TMP, 0, Serialized) // _TMP: Temperature 2659: Notify (\_SB.PC00.LPCB.EC0.SEN3, 0x91) // Device-Specific 2676: Local1 = \_SB.IETM.CTOK (S3PT) 2680: Local1 = \_SB.IETM.CTOK (S3AT) 2703: Method (_PSV, 0, Serialized) // _PSV: Passive Temperature 2707: Return (\_SB.IETM.CTOK (S3AT)) 2711: Return (\_SB.IETM.CTOK (S3PT)) 2715: Method (_CRT, 0, Serialized) // _CRT: Critical Temperature 2717: Return (\_SB.IETM.CTOK (S3CT)) 2725: Method (_HOT, 0, Serialized) // _HOT: Hot Temperature 2727: Return (\_SB.IETM.CTOK (S3HT)) 2737: Notify (\_SB.PC00.LPCB.EC0.SEN3, 0x91) // Device-Specific 2796: Notify (\_SB.PC00.LPCB.EC0.SEN3, 0x91) // Device-Specific 2805: Device (SEN4) 2808: Name (_UID, "SEN4") // _UID: Unique ID 2816: If ((S4DE == One)) 2826: Method (_TMP, 0, Serialized) // _TMP: Temperature 2873: Notify (\_SB.PC00.LPCB.EC0.SEN4, 0x91) // Device-Specific 2886: Method (_AC0, 0, Serialized) // _ACx: Active Cooling, x=0-9 2890: Local1 = \_SB.IETM.CTOK (S4PT) 2894: Local1 = \_SB.IETM.CTOK (S4AT) 2907: Method (_PSV, 0, Serialized) // _PSV: Passive Temperature 2911: Return (\_SB.IETM.CTOK (S4AT)) 2915: Return (\_SB.IETM.CTOK (S4PT)) 2919: Method (_CRT, 0, Serialized) // _CRT: Critical Temperature 2921: Return (\_SB.IETM.CTOK (S4CT)) 2929: Method (_HOT, 0, Serialized) // _HOT: Hot Temperature 2931: Return (\_SB.IETM.CTOK (S4HT)) 2941: Notify (\_SB.PC00.LPCB.EC0.SEN4, 0x91) // Device-Specific 2964: Notify (\_SB.PC00.LPCB.EC0.SEN4, 0x91) // Device-Specific -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161334 Title: ASUS X3500PC BIOS 302: SEN1–SEN4 static ACPI trip methods fail with AE_NOT_FOUND To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-7.0/+bug/2161334/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
