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diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -655,7 +655,8 @@
xpt.4 \
zero.4
-MLINKS= ads111x.4 ads1013.4 \
+MLINKS= acpi.4 apm.4
+MLINKS+=ads111x.4 ads1013.4 \
ads111x.4 ads1014.4 \
ads111x.4 ads1015.4 \
ads111x.4 ads1113.4 \
diff --git a/share/man/man4/acpi.4 b/share/man/man4/acpi.4
--- a/share/man/man4/acpi.4
+++ b/share/man/man4/acpi.4
@@ -594,6 +594,11 @@
and
.Xr iasl 8
utilities and some ACPI knowledge.
+.Sh FILES
+.Bl -tag -compact
+.It Pa /dev/acpi
+.It Pa /dev/apm
+.El
.Sh COMPATIBILITY
ACPI is only found and supported on i386/ia32 and amd64.
.Sh SEE ALSO
diff --git a/share/man/man4/man4.i386/Makefile b/share/man/man4/man4.i386/Makefile
--- a/share/man/man4/man4.i386/Makefile
+++ b/share/man/man4/man4.i386/Makefile
@@ -1,5 +1,4 @@
-MAN= apm.4 \
- CPU_ELAN.4 \
+MAN= CPU_ELAN.4 \
glxiic.4 \
glxsb.4 \
longrun.4 \
diff --git a/share/man/man4/man4.i386/apm.4 b/share/man/man4/man4.i386/apm.4
deleted file mode 100644
--- a/share/man/man4/man4.i386/apm.4
+++ /dev/null
@@ -1,159 +0,0 @@
-.\" LP (Laptop Package)
-.\"
-.\" Copyright (c) 1994 by HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp>
-.\"
-.\" This software may be used, modified, copied, and distributed, in
-.\" both source and binary form provided that the above copyright and
-.\" these terms are retained. Under no circumstances is the author
-.\" responsible for the proper functioning of this software, nor does
-.\" the author assume any responsibility for damages incurred with its
-.\" use.
-.\"
-.Dd November 1, 1994
-.Dt APM 4 i386
-.Os
-.Sh NAME
-.Nm apm
-.Nd APM BIOS interface
-.Sh SYNOPSIS
-.Cd device apm
-.Sh DEPRECATION NOTICE
-This driver is scheduled for removal prior to the release of
-.Fx 13.0 .
-.Sh DESCRIPTION
-.Nm
-is an interface to the Intel / Microsoft APM (Advanced Power Management) BIOS
-on laptop PCs.
-.Pp
-.Nm
-provides the following power management functions.
-.Bl -enum -offset indent
-.It
-When the system wakes up from suspended mode,
-.Nm
-adjusts the system clock to RTC.
-.It
-When the system wakes up from suspended mode,
-.Nm
-passes a message to
-.Xr syslogd 8
-comprising of system wakeup time and elapsed time during suspended mode.
-.It
-.Nm
-slows CPU clock when there are no system activities (runnable processes,
-interrupts, etc.).
-This function is available only on systems whose APM
-supports CPU idling.
-.It
-.Nm
-exports an application interface as a character device.
-Applications
-can control APM, or retrieve APM status information via this interface.
-.Nm
-exports the following interfaces.
-These symbols are defined in
-.In machine/apm_bios.h .
-.Bl -tag -width 4n -offset indent
-.It Sy APMIO_SUSPEND
-Suspend system.
-.It Sy APMIO_GET
-Get power management information.
-.It Sy APMIO_ENABLE
-.It Sy APMIO_DISABLE
-Enable / Disable power management.
-.It Sy APMIO_HALTCPU
-.It Sy APMIO_NOTHALTCPU
-Control execution of HLT in the kernel context switch routine.
-.It Sy APMIO_GETPWSTATUS
-Get per battery information.
-.Pp
-Some APM implementations execute the HLT
-(Halt CPU until an interrupt occurs)
-instruction in the
-.Dq Em Idle CPU
-call, while others do not.
-Thus enabling this may result in
-redundant HLT executions because
-.Dq Em Idle CPU
-is called from the kernel context switch routine that inherently executes
-HLT.
-This may reduce peak system performance.
-.Pp
-Also the system hangs up if HLT instruction is disabled in the kernel
-context switch routine, and if the APM implementation of the machine
-does not execute HLT in
-.Dq Em Idle CPU .
-On some implementations that do not support CPU clock slowdown, APM
-might not execute HLT.
-.Nm
-disables
-.Sy APMIO_NOTHALTCPU
-operation on such machines.
-.Pp
-The current version of
-.Nm
-does not call
-.Dq Em Idle CPU
-from the kernel context switch routine if clock slowdown is not supported,
-and it executes HLT instruction by default.
-Therefore, there is
-no need to use these two operations in most cases.
-.El
-.Pp
-These interfaces are used by
-.Xr apm 8 .
-.It
-.Nm
-polls APM events and handles the following events.
-.Bl -column "xxxxxxxxxxxxxxxxx" "xxxxxxxxxxxxx" "xxxxxxxx"
-.It Sy "Name" Ta Sy "Action" Ta Sy "Description"
-.It Dv "PMEV_STANDBYREQ" Ta No "suspend system" Ta "standby request"
-.It Dv "PMEV_SUSPENDREQ" Ta No "suspend system" Ta "suspend request"
-.It Dv "PMEV_USERSUSPENDREQ" Ta No "suspend system" Ta "user suspend request"
-.It Dv "PMEV_CRITSUSPEND" Ta No "suspend system" Ta "critical suspend request"
-.It Dv "PMEV_NORMRESUME" Ta No "resume system" Ta "normal resume"
-.It Dv "PMEV_CRITRESUME" Ta No "resume system" Ta "critical resume"
-.It Dv "PMEV_STANDBYRESUME" Ta No "resume system" Ta "standby resume"
-.It Dv "PMEV_BATTERYLOW" Ta No "notify message" Ta "battery low"
-.It Dv "PMEV_UPDATETIME" Ta No "adjust clock" Ta "update time"
-.El
-.El
-.Sh SEE ALSO
-.Xr apm 8 ,
-.Xr zzz 8
-.Sh AUTHORS
-.An Tatsumi Hosokawa Aq Mt hosokawa@jp.FreeBSD.org
-.Sh BUGS
-WARNING!
-Many, if not most, of the implementations of APM-bios in laptops
-today are buggy.
-You may be putting your LCD-display and batteries at
-a risk by using this interface.
-(The reason this is not a problem for
-MS-Windows is that they use the real-mode interface.)
-If you see any
-weird behavior from your system with this code in use, unplug the
-power and batteries ASAP, if not immediately, and disable this code.
-.Pp
-We are very interested in getting this code working, so please send your
-observations of any anomalous behavior to us.
-.Pp
-When
-.Nm
-is active, calling the BIOS setup routine by using hot-keys,
-may cause serious trouble when resuming the system.
-BIOS setup programs should be called during bootstrap, or from DOS.
-.Pp
-Some APM implementations cannot handle events such as pushing the
-power button or closing the cover.
-On such implementations, the system
-.Ar must
-be suspended
-.Ar only
-by using
-.Xr apm 8
-or
-.Xr zzz 8 .
-.Pp
-Disk spin-down, LCD backlight control, and power on demand have not
-been supported on the current version.
diff --git a/usr.sbin/apm/apm.8 b/usr.sbin/apm/apm.8
--- a/usr.sbin/apm/apm.8
+++ b/usr.sbin/apm/apm.8
@@ -73,9 +73,6 @@
call executes both CPU clock slowdown and HLT instruction,
.Fl h Cm false
is necessary to prevent the system from reducing its peak performance.
-See
-.Xr apm 4
-for details.
.It Fl l
Display the remaining battery percentage.
If your laptop does not
@@ -121,7 +118,7 @@
If multiple display options are given, the values are displayed one
per line in the order given here.
.Sh SEE ALSO
-.Xr apm 4 ,
+.Xr acpi 4 ,
.Xr zzz 8
.Sh AUTHORS
.An Tatsumi Hosokawa Aq Mt hosokawa@jp.FreeBSD.org
diff --git a/usr.sbin/apmd/apmd.8 b/usr.sbin/apmd/apmd.8
--- a/usr.sbin/apmd/apmd.8
+++ b/usr.sbin/apmd/apmd.8
@@ -25,7 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd June 28, 1999
+.Dd November 11, 2025
.Dt APMD 8 i386
.Os
.Sh NAME
@@ -297,7 +297,7 @@
#}
.Ed
.Sh SEE ALSO
-.Xr apm 4 ,
+.Xr acpi 4 ,
.Xr apm 8
.Sh HISTORY
The
diff --git a/usr.sbin/powerd/powerd.8 b/usr.sbin/powerd/powerd.8
--- a/usr.sbin/powerd/powerd.8
+++ b/usr.sbin/powerd/powerd.8
@@ -22,7 +22,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd February 25, 2023
+.Dd November 12, 2025
.Dt POWERD 8
.Os
.Sh NAME
@@ -140,7 +140,6 @@
.El
.Sh SEE ALSO
.Xr acpi 4 ,
-.Xr apm 4 ,
.Xr cpufreq 4 ,
.Xr rc.conf 5
.Sh HISTORY
diff --git a/usr.sbin/zzz/zzz.8 b/usr.sbin/zzz/zzz.8
--- a/usr.sbin/zzz/zzz.8
+++ b/usr.sbin/zzz/zzz.8
@@ -22,12 +22,12 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd July 13, 2003
+.Dd November 12, 2025
.Dt ZZZ 8
.Os
.Sh NAME
.Nm zzz
-.Nd suspend an ACPI or APM system
+.Nd suspend an ACPI system
.Sh SYNOPSIS
.Nm
.Sh DESCRIPTION
@@ -55,7 +55,6 @@
will be issued.
.Sh SEE ALSO
.Xr acpi 4 ,
-.Xr apm 4 ,
.Xr acpiconf 8 ,
.Xr apm 8
.Sh AUTHORS

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