Re: port-amiga/7771: /dev/grf3 in port-amiga refuses to work since NetBSD 1.3.3

[Stefan Sichler <sichler%rumms.uni-mannheim.de@localhost>]

Hello!

On Mon, 14 Jun 1999 11:20:41 -0600 (MDT), you (Michael L. Hitch) wrote about
"Re: port-amiga/7771: /dev/grf3 in port-amiga refuses to work since NetBSD
1.3.3":
> On Mon, 14 Jun 1999 sichler%rumms.uni-mannheim.de@localhost wrote:
> 
> > Since NetBSD 1.3.3, /dev/grf3 only shows vertical lines on the screen.
> > I suspect that only every fourth pixel is displayed.
> > Perhaps a 32bit Longword is cut down to a byte?
> > I use a PicassoII+ in an 8bit Mode.
> > 
> > >How-To-Repeat:
> > Take a PicassoII/II+/IV and start X under NetBSD1.3.3/1.4
> 
>   I'm running an A4000 on 1.4 with a PicassoII and it works fine for the
> most part.  [Something will occasionally clobber the display and I get
> persistent 'ghost' images that won't clear, even with an xrefresh.]
> 

Oh, I guess you don't use a 68060 CPU?

This 'Something' that clobbers your display occasionally is EXACTLY
the bug that I mean, but since 1.3.3 the bug doesn't occur occasionally
but permanent (at my machine).

I'm sure that this is the same bug, because in previous kernel releases,
I also had this bug (like you at the moment) occasionally, but when I
restarted the X server the bug has gone away again.
And now with 1.3.3 and 1.4 it looks the same, but the display is permanently
clobbered with ghost images and restarting the X server doesn't help.

So the bug seems **not** to be in /dev/grf3, but somewhere else in the
kernel, and it seems to be there for a longer time.

Perhaps this helps to find him: As far as I remember, a floppy disk access to
a non-readable disk caused sometimes the trashed display in earlier kernel
versions. 



Sorry for my poor english.
It's hard to give exact descriptions in a foreign language. 

Regards,

Stefan
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Stefan Sichler               \/\/ AT-AMIGA1200(T)/060 OS3.1
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