Date: Mon, 19 Apr 1999 20:41:31 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Warner Losh <imp@harmony.village.org> Cc: "Daniel C. Sobral" <dcs@newsguy.com>, Randy Bush <randy@psg.com>, mobile@FreeBSD.ORG Subject: Re: Sony VAIO suspend Message-ID: <19393.924547291@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 19 Apr 1999 12:27:56 MDT." <199904191827.MAA25969@harmony.village.org>
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In message <199904191827.MAA25969@harmony.village.org>, Warner Losh writes: >In message <371B62ED.5F885C62@newsguy.com> "Daniel C. Sobral" writes: >: I know of stand by, suspend *and* hibernate. There is no "aka" in >: this. > >suspend and hibernate are almost the same thing, and easily confused. Yes, indeed :-) Standby: keep CPU & clocks running at lowest possible speed. Possibly shut down non-state keeping parts of I/O devices (ie: spin down disk, turn off amplifier for sound, turn off backlight.) The machine is still alive and running. Batteries will last for some hours maybe a day. Most machines doesn this in multiple steps, with timeouts for screen, cpu and disk user-settable in the BIOS setup. Suspend: Stop the CPU & clocks. State still in RAM. Various IO device states stored in RAM and the devices turned off. Disks in SLEEP mode, if not downright turned off. Batteries will last for some days if not weeks. What most portables do when you "press the button". Hibernate: All state stored on disk (or other NV media). Entire machine turned off. Batteries can be removed. Disk can be transplanted to other but identical hardware and resumed there (!) -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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