https://bugzilla.kernel.org/show_bug.cgi?id=221824
Bug ID: 221824
Summary: HP Laptop 14s-fq1xxx: ACPI battery reports
energy_full_design equal to energy_full while BIOS
reports higher factory design capacity
Product: ACPI
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: ACPICA-Core
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 310559
--> https://bugzilla.kernel.org/attachment.cgi?id=310559&action=edit
HP Laptop 14s-fq1xxx reports inconsistent battery design capacity. HP BIOS and
SMBIOS (dmidecode -t 22) report the factory design capacity as 41050 mWh, while
the Linux ACPI battery interface exposes
System:
- HP Laptop 14s-fq1xxx
- Latest BIOS
- Linux kernel: (uname -a attached)
Issue:
The BIOS battery diagnostics report a factory design capacity of 41050 mWh.
However, the ACPI battery interface exposed to Linux reports:
energy_full_design = 29846000
energy_full = 29846000
As a result, UPower, acpi, and desktop applications report battery health as
100%.
I verified the following:
- BIOS battery diagnostics: Design Capacity = 41050 mWh
- dmidecode Type 22: Design Capacity = 41050 mWh
- /sys/class/power_supply/BAT0: energy_full_design = 29846000
- UPower D-Bus: EnergyFullDesign = 29.846 Wh
- acpi -V: design capacity equals last full capacity (100%)
- Windows powercfg /batteryreport also reports 100%.
Is this expected ACPI/firmware behaviour, or should the ACPI battery interface
expose the original factory design capacity instead of the recalibrated value?
I can provide additional logs if needed.
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