Re: matrox+history+xoff=fbcon/linux crash?

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Sun May 28 2000 - 04:08:41 EST


> If I cause a lot of scrolling, like ls -alR / and then shift-pageup for
> virtual console scrolling, and combine it with a few control-S's, I can
> reliably get my computer's console to completely crash. No more keyboard
> responses are accepted. Any ideas what's going on, or is it bad hardware?

That sounds like a race in the frame buffer code.

> Running: Linux-2.4.0-test1 SMP, the problem also exists in 2.3.99-pre3,
> don't know of any other kernels which this occurs in. 2.2.15 appears to
> be safe though (but this is on my laptop's VESA framebuffer, and it's
> single-CPU)

Boot a single CPU kernel on your SMP machine and test that, also test the
VESA fb not Matroxfb on your SMP box. Let me know what happens

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