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SubjectRe: [2.2.x] Obscure framebuffer bug
Hi Aaron.

> I can't reproduce this on command but it originally happened
> with the TGA framebuffer code and I went digging to see where
> this bug was popping up but nothing obvious showed up.

> I kept it in the back of my mind and then it happened on my main
> x86 box with the matrox framebuffer (w/ g200).

> Basic rundown of how to try to reproduce it:

> Top of the screen is fairly empty.

> You are typing in bash, a line that is longer that the width
> of the screen (you are one line above or on the bottom of the
> screen).

> Instead of using backspace, you use your arrow keys to go from
> the bottom line to the line above it. When this happens, the
> line in question gets redrawn at a random position on the bottom
> of the screen.

Which shell are you using? Also, what is your prompt set to?

I get exactly that occurring with bash if my prompt includes certain
variable length fields, but if I use a static prompt such as " Q> ",
it goes away...

> This has happened since 2.2.0 if I remember right.

I had the above happenning back with RedHat 4.1 and kernel 2.0.29,
which is as early as I go, but ONLY with the bash shell - it appears
not to be a problem with tcsh which is the other shell I've used...

Best wishes from Riley.

| There is something frustrating about the quality and speed of Linux |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch. |

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