Re: Questions about gnome-mag + orca

[Willie Walker <William Walker Sun COM>]

Hi Aurelian:

There may be a number of things going on there.  To get things working 
as good as possible with gnome-mag, I think you currently need to have 
the following (Carlos will correct me if I'm wrong, I hope!):

1) COMPOSITE enabled in the X server.  Since it seems as though you 
might be using Compiz with the eZoom plugin, I'm guessing this is the case.

2) gnome-mag needs to become the COMPOSITE manager.  If you are using 
Compiz, then gnome-mag may not be able to do so.  If this is the case, 
you should try using metacity.

3) Orca should be using gnome-mag in full screen mode.  This can be done 
in the "Magnification" tab of the Orca preferences GUI.

Having said all that, we have a task for "GNOME Outreach Program: 
Accessibility" for someone to get paid to help take the magnification 
solution beyond where we are now.  If someone is interested in this, 
please let us know!

Will

Aurelian Radu wrote:
> Thank you, Carlos. I am replying to your email using compiz-fusion (the 
> CPU usage barely reaches 3-4%. It would be great if gnome-mag were as 
> easy on the CPU.
>
> When you say that the algorithm can be calculated in the GPU, you mean 
> there is a setting I can change to do that, or is this a feature that 
> needs to be implemented?
>
> Thank you,
>
> Aurelian
>
> On Thu, Mar 27, 2008 at 6:02 PM, Carlos Diógenes <cerdiogenes gmail com 
> <mailto:cerdiogenes gmail com>> wrote:
>
>     Hi Aurelian,
>
>     Probably in a Core 2 Duo you will have 50% of CPU usage (100% of one
>     core). This is not a bug, this is due the fact that the magnification
>     algorithm is CPU intensive. This can be solved using the video card
>     processor, that is by far fastest for this type of operation.
>
>     If you pan a lot this will probably heat and battery life.
>
>     I'm not developing gnome-mag anymore, but probably the GNOME Outreach
>     Accessibility Program will adress these issues, but I think that this
>     will take a while, one or two GNOME releases.
>
>     Best regards,
>     Carlos.
>
>     2008/3/27, Aurelian Radu <ricaradu gmail com
>     <mailto:ricaradu gmail com>>:
>      > Hello list,
>      >
>      > Firstly, I'd like to thank the developers of gnome-mag and orca
>     for the
>      > significant improvements in the area of magnification. The great orca
>      > developers listened to my suggestion and created the option to
>     have the
>      > cursor centered while editing and navigating. Kudoz !
>      >
>      > Now I have a few questions:
>      > My desktop has an AMD Athlon64 single-core (1.8 GHz) and the CPU
>     soars to
>      > 100% when I move the mouse. Is this a bug or a limitation? I'm
>     planning on
>      > buying a notebook with a Core 2 Duo (T7250 or better) Would this more
>      > powerful CPU still soar to 100%? Will it affect heat and battery
>     life?
>      >
>      > I now have an NVIDIA GF 6600 GT. Would gnome-mag run smoothly on
>     Intel GMA
>      > X3100 or NVIDIA 8400 GS?
>      >
>      > Thanks for taking the tine to read this,
>      >
>      > Aurelian
>      >
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