Subject: Re: Call for testers: i386 ACPI suspend/resume support
To: None <>
From: Chapman Flack <>
List: current-users
Date: 06/20/2006 22:41:47
Perry E. Metzger wrote:
> This is not surprising. S3 is allowed to power off *everything* but
> memory, so the state of the video chip is lost. On restore we do a
> reset of the video, but we don't know what the state of the chip was
> before sleep. X effectively manages the drivers entirely in userland,
> so unless X decides to re-initialize the display it is going to be
> screwed up.

that's why I've always been so pleasantly surprised at how decent a
job the Dell CPi BIOS does at saving and restoring that state (in
APM mode, without OS help!) - I've been naively sleeping in X
as long as I've had the machine, and it always comes back with nothing
weirder than a few stray pixels attached to the X cursor, which go away
as soon as I move it over another window.  It's kind of an existence
proof. :)