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document APM_DISABLE_INTERRUPTS

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joda 1999-12-17 10:34:23 +00:00
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9
share/man/man4/man4.i386/apm.4
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@ -24,7 +24,7 @@
.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $NetBSD: apm.4,v 1.6 1999/09/09 03:52:22 itohy Exp $
.\" $NetBSD: apm.4,v 1.7 1999/12/17 10:34:23 joda Exp $
.\"
.Dd May 18, 1996
.Dt APM 4 i386
@ -76,6 +76,13 @@ Do not print power state on console at
.Dv APM_POWER_CHANGE
events. (Some systems generate the events too frequently,
and printing the status may disturb single-user operations.)
.It Dv APM_DISABLE_INTERRUPTS
Set this to zero if you don't want the kernel to disable interrupts
before calling the BIOS. This is required for most IBM ThinkPads, and
some other newer laptops. A good indication that you need this is that
the machine hangs just after resuming from suspended state. It's
unclear if doing this has negative effects on older BIOS, therefore it
defaults to one (i.e interrupts are disabled).
.El
.Pp
If no processes are holding open file descriptors to the APM device, the