linux-kernel - Re: [RFD] Automatic suspend

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090217220439.GA1573@srcf.ucam.org>
Date:	Tue, 17 Feb 2009 22:04:39 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	mark gross <mgross@...ux.intel.com>
Cc:	Pavel Machek <pavel@...e.cz>, "Rafael J. Wysocki" <rjw@...k.pl>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	"Woodruff, Richard" <r-woodruff2@...com>,
	Uli Luckas <u.luckas@...d.de>,
	Igor Stoppa <igor.stoppa@...ia.com>,
	Brian Swetland <swetland@...gle.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFD] Automatic suspend

On Tue, Feb 17, 2009 at 01:57:17PM -0800, mark gross wrote:

> Putting the wake on key event issue aside, is it possible to have wake
> up's on the ms time scale?  I ask because I thought the XO did exactly
> this (but left the screen live).  Why does it take 20 sec to get into
> or out of S3 on my laptop?

Graphics reinit, dumping graphics contents back into RAM, us resuming 
devices in series, that kind of thing. On some hardware you'll spend a 
noticable amount of time in the BIOS before any of the Linux resume code 
gets touched. I thought the XO had got sub second, but I wasn't sure 
that they were in the low ms range.

-- 
Matthew Garrett | mjg59@...f.ucam.org
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/