RE: Blank console on keyboard request

Jones D (djones2@glam.ac.uk)
Tue, 23 Nov 1999 11:31:52 -0000

> > Actually that _was_ that patch long ago, but I was told it is too
> > dangerous: malicious user could gain /dev/tty1 access and then fry
> > monitor with blank/unblank/blank/unblank.
>
> > This is not concern for users which have console access,
> because they
> > could just use hammer on monitor :-). Or maybe I'm just too paranoid
> > and should add TIOCLINUX ioctl?
>
> Indeed, there are other ways to fry a monitor. Coffee anyone?

If I hold my finger on alt & right arrow, to cycle through tty's,
every now and then the display breaks up, and the monitor goes way
out of sync for a second or so before returning back to normal.
This does need physical console access to do though, so I'm not concerned :)
I doubt that it's harmful either, just.. strange.

The card is a Matrox Millenium, with frame buffer support compiled in.

d.

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