ACPISURFACE(4) | Device Drivers Manual | ACPISURFACE(4)

# NAME

`acpisurface` — Microsoft Surface Book ACPI support

# SYNOPSIS

`acpisurface* at acpi?`

# DESCRIPTION

The `acpisurface` driver provides ACPI support for Microsoft Surface Book laptops. It responds to various button presses such as volume up/down and power buttons, all of which are located on the top of the tablet/detachable display. It does not provide support for the hotkeys in the keyboard/base unit.

Volume up/down button presses are routed to the master system mixer via the wscons(4) subsystem. Power button presses result in a soft power off request being queued by the acpi(4) subsystem.

# SEE ALSO

acpi(4), audio(4), wscons(4)

# HISTORY

The `acpisurface` driver first appeared in OpenBSD 6.4.

July 1, 2018 | Debian