Re: Questions about fbdriver integration (solved)

[Geert Uytterhoeven <geert@linux-m68k.org>]

On Sun, 25 Nov 2007, Ico Doornekamp wrote:
> * On 2007-11-25 Ico Doornekamp <fbdev@zevv.nl> wrote  :
> > * On 2007-11-25 Ico Doornekamp <fbdev@zevv.nl> wrote  :
> > > > Fbcon writes to the memory at fb_info.screen_base.
> > > That is what I expected. I'll have to do a bit more debugging here then.
> > 
> > It seems that my driver did not fill the line_length member of
> > fb_fix_screeninfo, and no gets was copied by fbcon when this is missing.
> > 
> > I filled in this field, but now
> > 
> >   BUG: unable to handle kernel paging request at virtual address c882a800
> > 
> >   [<c882450c>] mbarcfb_imageblit+0xc/0x20 [mbarcfb]
> >   [<c881315d>] soft_cursor+0x15d/0x1bc [softcursor]
> >   [<c8817b38>] bit_cursor+0x338/0x5a8 [bitblit]
> >   [<c01c5c53>] vsnprintf+0x303/0x690
> > 
> > happens. Back to do some more debugging.
> 
> Ok, one more reply to myself: all problems seem to be solved now - I

Good!

> changed my driver to support 8-bit pseudocolor instead of 1-bit mono,
> and suddenly both the console and X are working just fine. It seems that
> the MONO01 visual is just not well supported in various other parts
> interacting with the framebuffer code.

That's strange. Monochrome is known to work on Amiga. Last one I tried
was 2.6.24-rcX.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

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