FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F4.1.1 1999-10-02T03:56:42Z 1999-10-02T03:56:42Z Nick Sayer nsayer@FreeBSD.org 1999-10-02T03:56:42Z urn:sha1:472a4993b0e6780a44e2970b8b02df83a07e736d apm_saver uses the apm_display() routine from the apm system to "suspend" the "display" part of the machine. This is beneficial for some laptops (or other machines with non-traditional displays) that choke on the 'green' saver's effect. Another way of looking at this is that it's the same as a screen saver that does an 'apm -d 0' to blank the display and an 'apm -d 1' to bring it back. One probably ought to use these commands to make sure the effect will be correct before using it unattended.