Hello!
> Reported from Redhat Bugzilla Bug 170450
>
> "I updated to the development kernel and now during boot only the top of the
> text is visable. For example the monitor screen the is the lines and I can
> only see text in the asterik area.
> ---------------------
> | **************** |
> | * * |
> | * * |
> | **************** |
> | |
> | |
> | |
> ---------------------
>
> I have a Silicon Graphics 1600sw LCD panel with a Number Nine Revolution 4
> video card."
>
> This bug seems to be a glitch in the VGA core of this chipset. Resizing
> the screen triggers the mentioned bug.
>
> The workaround is to make vgacon avoid calling vgacon_doresize() if the
> display parameters did not change. It also has a nice side effect of faster
> console switches, but that will be barely noticeable.
This patch really deserves a comment in the code that such a broken hardware
exists.
Also, I don't see much reasons for introducing VGA_FONTWIDTH, it seems to only
complicate the code.
Have a nice fortnight
--
Martin `MJ' Mares <[email protected]> http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
For every complex problem, there's a solution that is simple, neat and wrong.
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