full-disclosure - Xfree86 video buffering?

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From: evilninja at gmx.net (_evil)
Subject: Xfree86 video buffering?

KF (lists) wrote:
> Recently I have noticed that after shutting down my machine or rebooting 
> my X-windows will briefly flash an image of whatever I was doing when I 
> rebooted the machine or logged out.

i've had a similiar issue with a 3dfx "banshee" videocard and some 
(beta)driver under win2k (or win98?). this card had 16MB video-ram and 
as cards are coming with more and more ram, these things might occur 
more often. the thing is: where does the video-card save this 
"screenshot", when the computer is powered down? maybe this ATX ("soft 
poweroff" or so?) is to blame. or even ACPI. yes, blame ACPI ;-)