[Splashy-users] Splasy tries to set invalid framebuffer mode

[Luis]

Thanks a lot for this tip Rob.

This is worthy of adding to the Tips and Tricks section in the wiki.

(Note, i'm cc'ing the splashy-users list so that others know about
this as well).

On 11/13/06, Rob Walker <rob at tenfoot.org.uk> wrote:
> On Sunday 12 November 2006 15:29, you wrote:
> >
> > Now this is something that deserves investigating. As far as I know,
> > the libdirectfb library that we use for Splashy, doesn't try to
> > manipulate those settings unless you explicitly tell it to do so.
> >
> > One more thing, your card does support 95Hz, right? It's just that
> > your monitor can't handle it. We do have code in Splashy that looks
> > for the highest resolution supported by the card and uses that.
> > However, I was under the impression that if you set the limit with
> > your kernel parameters, that libdirectfb would not be able to go
> > higher than that. I'm guessing that in the case of matroxfb, you are
> > setting your default rate to 75Hz, but the card can go higher at any
> > point. Perhaps Splashy needs a configuration in
> > /etc/splashy/config.xml to tell it up to what resolution it should be
> > attempting to work.
> >
> > I'll add this to our TODO file for investigation. Though it will be
> > hard for us to reproduce your setup. We all use vesafb since that is
> > known to work flawlessly.
> >
> > Regards,
>
> I've had another look at this.  It appears that when splashy asks DirectFB to
> select a video mode by  width x height, DirectFB chooses the first one listed
> in /etc/fb.modes that matches the desired size. With the
> default /etc/fb.modes shipped in debian, the first 1280x1024 mode
> is "1280x1024, 43 Hz, Interlaced", which my monitor can't handle (not really
> surprising).  Moving the 1280x1024 @ 75Hz mode that I want to the top
> of /etc/fb.modes means that DirectFB sets the correct mode and splashy works
> OK.
>
> Thanks for your help
>
> Regards
>
> Rob
>
> --
> Rob Walker <rob at tenfoot.org.uk>
> http://www.tenfoot.org.uk
>


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Luis Mondesi
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