Performed a bit more testing with ACPI_DEBUG enabled and that produced
the same result for _BST method, remaining capacity returns 1 (output
below).
The other _BST fields are working as expected and refreshing values
correctly. Checked sys/dev/acpi/dsdt.c and the ACPI spec for the
battery state method and all those values are parsed through the same
functions and should be the same type according the spec:

Package {
   Battery State               // Integer (DWORD)
   Battery Present Rate        // Integer (DWORD)
   Battery Remaining Capacity  // Integer (DWORD)
   Battery Present Voltage     // Integer (DWORD)
}

ACPI_DEBUG:
--==Finished evaluating method: \\_SB_.BAT0._BST t
 0xffff800002212888 cnt:01 stk:00 package: 04
 0xffff800002216f08 cnt:01 stk:00 integer: 1
 0xffff800002212788 cnt:01 stk:00 integer: 1ac
 0xffff800002214888 cnt:01 stk:00 integer: 1        <--- remaining capacity
 0xffff800002213788 cnt:01 stk:00 integer: 2d1d
===== Stack \\_SB_.BAT0._BST:Method

I will test a bit more as time permits.

PT

On Fri, Feb 21, 2025 at 7:24 PM Peter Toth <peter.toth198@gmail.com> wrote:
>
> Hi all,
>
> Tested a couple of Getac laptops recently with latest amd64 snapshots.
> Both have dual batteries attached to acpibat(4) and both show 0
> remaining battery capacity.
> Apart from that most other battery properties are OK and sysctl reports:
> hw.sensors.acpibat0.volt0=11.10 VDC (voltage)
> hw.sensors.acpibat0.volt1=11.63 VDC (current voltage)
> hw.sensors.acpibat0.current0=0.39 A (rate)
> hw.sensors.acpibat0.amphour0=2.01 Ah (last full capacity)
> hw.sensors.acpibat0.amphour1=0.00 Ah (warning capacity)
> hw.sensors.acpibat0.amphour2=0.00 Ah (low capacity)
> hw.sensors.acpibat0.amphour3=0.00 Ah (remaining capacity), OK
> hw.sensors.acpibat0.amphour4=2.10 Ah (design capacity)
> hw.sensors.acpibat0.raw0=1 (battery discharging), OK
> hw.sensors.acpibat1.volt0=11.10 VDC (voltage)
> hw.sensors.acpibat1.volt1=11.63 VDC (current voltage)
> hw.sensors.acpibat1.current0=0.40 A (rate)
> hw.sensors.acpibat1.amphour0=2.04 Ah (last full capacity)
> hw.sensors.acpibat1.amphour1=0.00 Ah (warning capacity)
> hw.sensors.acpibat1.amphour2=0.00 Ah (low capacity)
> hw.sensors.acpibat1.amphour3=0.00 Ah (remaining capacity), OK
> hw.sensors.acpibat1.amphour4=2.10 Ah (design capacity)
> hw.sensors.acpibat1.raw0=1 (battery discharging), OK
>
> Inserted a couple of printf lines in sys/dev/acpi/acpibat.c to see
> what could be happening. The battery state for capacity in
> acpibat_getbst, line sc->sc_bst.bst_capacity =
> aml_val2int(res.v_package[2]); always reports a value of "1". The
> other 3 bst properties for voltage, rate and state are correct.
>
> Perhaps the AML parsing is breaking on some unexpected DSDT _BST
> values. If anyone is interested, I've uploaded the gzipped DSDT.dsl
> to:
> https://limewire.com/d/10e22f54-79da-456b-b492-c67e5cd40f81#EQDxKXdMDt05voTVeono-cfx3tgF3MJP9RdUhiEPEKg
>
> Perhaps someone has already seen this issue before, I would appreciate
> any help or pointers.
>
> As a side note, also tested with FreeBSD live usb boot and the
> remaining capacity showed up OK (same in Linux).
>
> dmesg below:
> OpenBSD 7.6 (GENERIC.MP) #10: Fri Feb 21 17:00:04 CET 2025
>     p@b360.my.domain:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 68532105216 (65357MB)
> avail mem = 66431197184 (63353MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 3.2 @ 0x9a263000 (38 entries)
> bios0: vendor INSYDE Corp. version "R1.35.070520" date 05/29/2024
> bios0: GETAC B360
> efi0 at bios0: UEFI 2.7
> efi0: INSYDE Corp. rev 0x1350000
> acpi0 at bios0: ACPI 5.1
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP UEFI SSDT SSDT SSDT TPM2 MSDM LPIT WSMT SSDT
> SSDT DBGP DBG2 SSDT SSDT SSDT SSDT NHLT ECDT HPET APIC MCFG SSDT DMAR
> SSDT FPDT ASF! BGRT
> acpi0: wakeup devices UAR1(S3) GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4)
> RP01(S4) RP02(S4) RP03(S4) RP04(S4) RP05(S4) RP06(S4) RP07(S4)
> RP08(S4) RP09(S4) PEGP(S4) RP10(S4) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpiec0 at acpi0
> acpihpet0 at acpi0: 23999999 Hz
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1547.73 MHz,
> 06-8e-0c, patch 000000fc
> cpu0: cpuid 1 edx=bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> ecx=77fafbbf<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND>
> cpu0: cpuid 6 eax=27f7<SENSOR,ARAT> ecx=9<EFFFREQ>
> cpu0: cpuid 7.0
> ebx=29c67af<FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT>
> edx=bc000600<SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD>
> cpu0: cpuid a vers=4, gp=4, gpwidth=48, ff=3, ffwidth=48
> cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
> cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG>
> ecx=121<LAHF,ABM,3DNOWP>
> cpu0: cpuid 80000007 edx=100<ITSC>
> cpu0: msr 10a=a0a0c2b<IBRS_ALL,SKIP_L1DFL,MDS_NO,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,RRSBA,GDS_CTRL,RFDS_NO>
> cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> 64b/line 4-way L2 cache, 6MB 64b/line 12-way L3 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 24MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1513.41 MHz,
> 06-8e-0c, patch 000000fc
> cpu1: smt 0, core 1, package 0
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.52 MHz,
> 06-8e-0c, patch 000000fc
> cpu2: smt 0, core 2, package 0
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.52 MHz,
> 06-8e-0c, patch 000000fc
> cpu3: smt 0, core 3, package 0
> cpu4 at mainbus0: apid 1 (application processor)
> cpu4: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.51 MHz,
> 06-8e-0c, patch 000000fc
> cpu4: smt 1, core 0, package 0
> cpu5 at mainbus0: apid 3 (application processor)
> cpu5: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.52 MHz,
> 06-8e-0c, patch 000000fc
> cpu5: smt 1, core 1, package 0
> cpu6 at mainbus0: apid 5 (application processor)
> cpu6: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.51 MHz,
> 06-8e-0c, patch 000000fc
> cpu6: smt 1, core 2, package 0
> cpu7 at mainbus0: apid 7 (application processor)
> cpu7: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1496.52 MHz,
> 06-8e-0c, patch 000000fc
> cpu7: smt 1, core 3, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xe0000000, bus 0-255
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus -1 (RP01)
> acpiprt2 at acpi0: bus -1 (RP02)
> acpiprt3 at acpi0: bus -1 (RP03)
> acpiprt4 at acpi0: bus -1 (RP04)
> acpiprt5 at acpi0: bus -1 (RP05)
> acpiprt6 at acpi0: bus -1 (RP06)
> acpiprt7 at acpi0: bus -1 (RP07)
> acpiprt8 at acpi0: bus 1 (RP08)
> acpiprt9 at acpi0: bus -1 (RP09)
> acpiprt10 at acpi0: bus 2 (RP10)
> acpiprt11 at acpi0: bus -1 (RP11)
> acpiprt12 at acpi0: bus -1 (RP12)
> acpiprt13 at acpi0: bus 7 (RP13)
> acpiprt14 at acpi0: bus -1 (RP14)
> acpiprt15 at acpi0: bus -1 (RP15)
> acpiprt16 at acpi0: bus -1 (RP16)
> acpiprt17 at acpi0: bus -1 (RP17)
> acpiprt18 at acpi0: bus -1 (RP18)
> acpiprt19 at acpi0: bus -1 (RP19)
> acpiprt20 at acpi0: bus -1 (RP20)
> acpiprt21 at acpi0: bus -1 (RP21)
> acpiprt22 at acpi0: bus -1 (RP22)
> acpiprt23 at acpi0: bus -1 (RP23)
> acpiprt24 at acpi0: bus -1 (RP24)
> acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000
> "MTC0303" at acpi0 not configured
> "PNP0A05" at acpi0 not configured
> com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
> com1 at acpi0 UAR2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo
> "PNP0A05" at acpi0 not configured
> com3 at acpi0 UAR1 addr 0x2e8/0x8 irq 5: ns16550a, 16 byte fifo
> com3: probed fifo depth: 0 bytes
> "ETD045F" at acpi0 not configured
> "MSFT9001" at acpi0 not configured
> pchgpio0 at acpi0 GPI0 addr 0xfd6e0000/0x10000 0xfd6d0000/0x10000
> 0xfd6a0000/0x10000 irq 14, 320 pins
> "CUST0000" at acpi0 not configured
> "INT3515" at acpi0 not configured
> "ACPI000E" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> acpiac0 at acpi0: AC unit offline
> acpibat0 at acpi0: BAT0 model "Internal Battery" type Lion oem
> "Generic Charger "
> acpibat1 at acpi0: BAT1 model "Internal Battery" type Lion oem
> "Generic Charger "
> acpibtn0 at acpi0: LID0
> "PNP0C14" at acpi0 not configured
> acpibtn1 at acpi0: SLPB
> "PNP0C14" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> intelpmc0 at acpi0: PEPD
> state 0: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> state 1: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x00:32:0:0x03:0x00000000fe00193c
> frequency: 9580
> tpm0 at acpi0 TPM_ 2.0 (TIS) addr 0xfed40000/0x5000, device 0x001b15d1 rev 0x16
> "PNP0C14" at acpi0 not configured
> acpipwrres0 at acpi0: USBC, resource for XDCI
> acpipwrres1 at acpi0: PC05, resource for RP09
> acpipwrres2 at acpi0: V0PR
> acpipwrres3 at acpi0: V1PR
> acpipwrres4 at acpi0: V2PR
> acpipwrres5 at acpi0: WRST
> acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu4 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu5 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu6 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpicpu7 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151
> mwait.1@0x33), C1(1000@1 mwait.1), PSS
> acpitz0 at acpi0: critical temperature is 99 degC
> acpipwrres6 at acpi0: PIN_
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> cpu0: Enhanced SpeedStep 1547 MHz: speeds: 2101, 2100, 2000, 1900,
> 1700, 1600, 1500, 1400, 1200, 1100, 1000, 800, 700, 600, 500, 400 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core 10G Host" rev 0x0c
> inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics" rev 0x02
> drm0 at inteldrm0
> inteldrm0: msi, COMETLAKE, gen 9
> pchtemp0 at pci0 dev 18 function 0 "Intel 400 Series Thermal" rev 0x00
> "Intel 400 Series ISH" rev 0x00 at pci0 dev 19 function 0 not configured
> xhci0 at pci0 dev 20 function 0 "Intel 400 Series xHCI" rev 0x00: msi, xHCI 1.10
> usb0 at xhci0: USB revision 3.0
> uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev
> 3.00/1.00 addr 1
> "Intel 400 Series Shared SRAM" rev 0x00 at pci0 dev 20 function 2 not configured
> dwiic0 at pci0 dev 21 function 0 "Intel 400 Series I2C" rev 0x00: apic 2 int 16
> iic0 at dwiic0
> dwiic1 at pci0 dev 21 function 1 "Intel 400 Series I2C" rev 0x00: apic 2 int 17
> iic1 at dwiic1
> ihidev0 at iic1 addr 0x2a gpio 103, vendor 0xeef product 0xc002, CUST0000
> ihidev0: 24 report ids
> ims0 at ihidev0 reportid 1: 3 buttons
> wsmouse0 at ims0 mux 0
> hid at ihidev0 reportid 3 not configured
> hid at ihidev0 reportid 5 not configured
> hid at ihidev0 reportid 7 not configured
> ims1 at ihidev0 reportid 24: 1 button, tip
> wsmouse1 at ims1 mux 0
> dwiic2 at pci0 dev 21 function 2 "Intel 400 Series I2C" rev 0x00: apic 2 int 18
> iic2 at dwiic2
> "INT3515" at iic2 addr 0x23 not configured
> "Intel 400 Series MEI" rev 0x00 at pci0 dev 22 function 0 not configured
> ahci0 at pci0 dev 23 function 0 "Intel 400 Series AHCI" rev 0x00: msi,
> AHCI 1.3.1
> ahci0: PHY offline on port 0
> ahci0: PHY offline on port 1
> scsibus1 at ahci0: 32 targets
> ppb0 at pci0 dev 28 function 0 "Intel 400 Series PCIE" rev 0xf0: msi
> pci1 at ppb0 bus 1
> iwx0 at pci1 dev 0 function 0 "Intel Wi-Fi 6 AX200" rev 0x1a, msix
> ppb1 at pci0 dev 29 function 0 "Intel 400 Series PCIE" rev 0xf0: msi
> pci2 at ppb1 bus 2
> ppb2 at pci0 dev 29 function 4 "Intel 400 Series PCIE" rev 0xf0: msi
> pci3 at ppb2 bus 7
> nvme0 at pci3 dev 0 function 0 "Samsung PM9C1 NVMe" rev 0x00: msix, NVMe 2.0
> nvme0: Samsung SSD 990 PRO 1TB, firmware 4B2QJXD7, serial S6Z2NU0X554555D
> scsibus2 at nvme0: 2 targets, initiator 0
> sd0 at scsibus2 targ 1 lun 0: <NVMe, Samsung SSD 990, 4B2Q>
> sd0: 953869MB, 512 bytes/sector, 1953525168 sectors
> pcib0 at pci0 dev 31 function 0 "Intel 400 Series LPC" rev 0x00
> azalia0 at pci0 dev 31 function 3 "Intel 400 Series HD Audio" rev 0x00: msi
> azalia0: codecs: Realtek ALC268, Intel/0x280b, using Realtek ALC268
> audio0 at azalia0
> ichiic0 at pci0 dev 31 function 4 "Intel 400 Series SMBus" rev 0x00:
> apic 2 int 16
> iic3 at ichiic0
> spdmem0 at iic3 addr 0x50: 32GB DDR4 SDRAM PC4-25600 SO-DIMM
> spdmem1 at iic3 addr 0x52: 32GB DDR4 SDRAM PC4-25600 SO-DIMM
> "Intel 400 Series SPI" rev 0x00 at pci0 dev 31 function 5 not configured
> em0 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x00: msi, address
> 00:22:20:3e:a3:52
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard
> pms0 at pckbc0 (aux slot)
> wsmouse2 at pms0 mux 0
> pms0: Elantech Touchpad, version 4, firmware 0x5e0f01
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vmm0 at mainbus0: VMX/EPT
> efifb at mainbus0 not configured
> uhub1 at uhub0 port 8 configuration 1 interface 0 "Genesys Logic
> USB2.0 Hub" rev 2.00/60.90 addr 2
> ugen0 at uhub1 port 1 "Generic EMV Smartcard Reader" rev 2.01/1.20 addr 3
> uvideo0 at uhub0 port 9 configuration 1 interface 0 "SunplusIT Inc
> Full HD Camera" rev 2.01/1.10 addr 4
> video0 at uvideo0
> vscsi0 at root
> scsibus3 at vscsi0: 256 targets
> softraid0 at root
> scsibus4 at softraid0: 256 targets
> sd1 at scsibus4 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006>
> sd1: 953609MB, 512 bytes/sector, 1952992063 sectors
> root on sd1a (81e11568a3f5b815.a) swap on sd1b dump on sd1b
> inteldrm0: 1920x1080, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
> iwx0: hw rev 0x340, fw 77.a20fb07d.0, address e0:2e:0b:92:0b:08