Date: Sat, 11 Sep 1999 00:22:53 -0400 (EDT) From: Chuck Robey <chuckr@picnic.mat.net> To: Mike Smith <mike@smith.net.au> Cc: Luigi Rizzo <luigi@labinfo.iet.unipi.it>, hackers@FreeBSD.ORG Subject: Re: damn ATX power supplies... Message-ID: <Pine.BSF.4.10.9909110020500.28670-100000@picnic.mat.net> In-Reply-To: <199909091735.KAA00703@dingo.cdrom.com>
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On Thu, 9 Sep 1999, Mike Smith wrote: > > > any idea on how to force ATX power supplies to restart after a power > > outage without having someone press the 'power' button on the front > > panel ? All the motherboards i can find now have their bios with two > > options: > > > > Disabled > > no automatic restart on power failure > > You _should_ be able to change this. > > > none of them is satisfactory especially for picoBSD things such as > > routers or firewalls where an UPS is overkill... > > You can always hotwire the supply; go dig up a pinout for the ATX power > connector and you'll see that if you ground the power-on line the PSU > will come up... It's not just a ground, the line that brings up the power is a momentary switch, so a longish (about 1/2 second) pulse would do it. That would make it easier for you to set it up so you *could* turn it off if you actually did want to. Of course, if you did turn it off, and used this pulse idea, the next power fluctuation would turn your PC back on ... kinda inverted behavior! > > -- > \\ The mind's the standard \\ Mike Smith > \\ of the man. \\ msmith@freebsd.org > \\ -- Joseph Merrick \\ msmith@cdrom.com > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > ---------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@mat.net | communications topic, C programming, Unix and 213 Lakeside Drive Apt T-1 | carpentry. It's all in the design! Greenbelt, MD 20770 | picnic.mat.net: FreeBSD/i386 (301) 220-2114 | jaunt.mat.net : FreeBSD/Alpha ---------------------------+----------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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