https://bugzilla.kernel.org/show_bug.cgi?id=198145
Bug ID: 198145
Summary: Surface Pro 2017 battery isn't visible, power supply
is always off-line
Product: ACPI
Version: 2.5
Kernel Version: 4.15.0
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Battery
Assignee: [email protected]
Reporter: [email protected]
Regression: No
On the SP2017 there is no hint of a battery present:
- ADP1 is the only entry in /sys/class/power_supply; no BAT* entries
- "upower -d", "acpi -V", "dmidecode -t 22", and "find /sys/devices -name
\*power_supply\*" all return nothing battery-related
Also, "acpi --ac-adapter" and similar show the adapter as off-line even when
plugged in.
Battery detection and power supply queries works fine on the previous
generation (Surface Pro 4) which has the same MSHW0040 HID device.
Please find attached:
- dmesg output
- acpidump outputs
- /sys/firmware/acpi/tables/*
Let me know if there's anything else I can provide or try.
As an aside, I've tried the various Surface Pro kernel patches and none of them
resolve this either.
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