Another idea for erasing video ram.

57bd159b · 127.0.0.1 · amnesia · 52165244 · 57bd159b
Commit 57bd159b authored Nov 02, 2011 by 127.0.0.1 Committed by amnesia Nov 02, 2011
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wiki/src/todo/erase_video_memory_on_shutdown.mdwn wiki/src/todo/erase_video_memory_on_shutdown.mdwn +3 -0

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@@ -12,3 +12,6 @@ Talking with a friend of mine who used to work on video card drivers for X.org (
 > < brutal_chaos> Is there a way to flush the vram then?

 > < MostAwesomeDude> Basically, become root, find the PCI BAR where VRAM's mapped, and walk over it. There's a couple things called mmapw and mmapr that can help you; Google for them.
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+Another idea, maybe related to the previous (this isn't really my strong point), is mapping all ram, including video memory as virtual ram and with the use of kfree in the kernel, writing all 0's to it.