Console screen corruption?

[walt]

On Mon, 15 Dec 2008, Sascha Wildner wrote:

> walt schrieb:
> > > Also, can you recompile with
> > >
> > > options VGA_DEBUG=2
> > > options FB_DEBUG=2
> > >
> > > in your kernel config and post or mail me a verbose boot message?
> >
> > I put the dmesg in my leaf account: leaf.dragonflybsd.org/~wa1ter
>
> Thanks. However, it doesn't look unusual at the first sight.
>
> Can you try one more thing? From qemu, do 'kldload vesa', choose some valid
> mode number from the output of 'vidcontrol -i mode' (15, 16 or 32 bit will
> do), and set a VESA mode with 'vidcontrol MODE_<number>'. Tell me if the
> problem persists with the new resolution.

Hey, that works!  Completely fixes the blanking-every-other-character while
scrolling through my command history.

I hope that suggests a possible fix for this problem?

(BTW I chose vidcontrol MODE_30 more or less at random.)

Thanks.