Dangerous memory of your graphics adapter

vbimport

#1

We’ve just posted the following news: Dangerous memory of your graphics adapter[newsimage]http://static.myce.com//images_posts/2015/03/screenshot1-95x75.png[/newsimage]

Under the name “Palinopsia Bug” a group of people report about graphics adapters that remember the contents of your screen even after rebooting the machine. This was achieved by simply accessing the content of the card’s frame buffer.

            Read the full article here: [http://www.myce.com/news/dangerous-memory-of-your-graphics-adapter-75564/](http://www.myce.com/news/dangerous-memory-of-your-graphics-adapter-75564/)

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#2

That’s your April’s fools joke for this year, right?
“Posted 01 April 2015 [B]04:01[/B]” - that was an easy guess this year :bigsmile:


#3

Yeah. Didn’t that also happen back in the eighties with dial up modems…:rolleyes:


#4

[QUOTE=ZappZapp;2751245]That’s your April’s fools joke for this year, right?
“Posted 01 April 2015 [B]04:01[/B]” - that was an easy guess this year :bigsmile:[/QUOTE]

No, this one’s genuine.

[B]Wombler[/B]


#5

If this had been an April Fool’s thing, it would have just given someone the idea to test it out.

The concept is very real; the premise behind it is actually the reason some applications are buggy: it’s up to the application to set/reset memory contents before reading from a given location, as an OS (or in this case a driver) tends to only worry about allocation of memory and making sure nothing steps outside those memory bounds. Otherwise, there’s no care for the contents of said memory, and an app that doesn’t reset memory contents can easily get old data that otherwise was never cleared out. There may be some mechanisms to prevent apps from using memory that’s been recently allocated to another program (for performance reasons if nothing else), and memory segmentation makes it hard to get huge chunks of data in some cases, but the data is still there.

It doesn’t hurt that memory is designed to remember for as long as it can. :stuck_out_tongue:


#6

It shouldn’t be possible after the computer has been powered down as, like the computer’s main RAM, graphics cards use volatile memory.

But if the computer is simply re-booted, power to the graphics card RAM is maintained and the contents will persist unless flushed.

[QUOTE=Albert;2751329]
It doesn’t hurt that memory is designed to remember for as long as it can. :p[/QUOTE]
Off to check the warranty on mine - definitely faulty

:sad: