SciLab 5.0.2 problem in Fedora 9.0

mehrdad ghassempoory

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Oct 12, 2008, 3:36:53 PM10/12/08

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I have just installed Scilab 5.0.2 on my PC running under
Fedora 9.0 (recently updated). Scilab seems to run OK.
However all requests for plots will only show a blank
(black) plot window. Has anyone else had this experience? Is
there a cure?

ycollet

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Oct 13, 2008, 2:33:27 AM10/13/08

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Hello,

Have you tried to upgrade your video card driver ?

YC

ycollet

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Oct 13, 2008, 2:34:29 AM10/13/08

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Of cource, I mean "graphic card" instead of "video card" !!

Holger Nahrstaedt

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Oct 13, 2008, 5:29:27 AM10/13/08

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I have updated to Kubuntu 8.10 and i have the same problems. I see
only black plot windows, when i try to plot something. I use the
newest available software:

* Mesa 7.2
* xserver-xorg 7.4
* xorg-video-intel 2.4.1

Software Rendering works really bad. It takes 15sec to show a simple
plot and scilab crashes after resizing the window.

Is a better Linux suppord planed? Is there any working software
rendering mode planed, which is fast as scilab 4.1.2?

Holger

Mehrdad Ghassempoory

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Oct 13, 2008, 11:28:27 AM10/13/08

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ycollet wrote:
> Of cource, I mean "graphic card" instead of "video card" !!

I have the latest updates from Redhat.
Scilab does not complain!

ycollet

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Oct 13, 2008, 12:33:59 PM10/13/08

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Maybe you should go to the website of ati (http://ati.amd.com) or
nvidia (http://www.nvidia.com) to get the latest driver for your
graphic card.
I used to have some problems with scilab and graphics and once I
installed the latest driver from the vendor card, most of the problems
disappear.

YC

Roberto Bucher

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Oct 13, 2008, 2:04:12 PM10/13/08

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I think that using an nvidia or ati driver with an Intel card isn't a
good idea!!!

Scilab-5.x graphics is bad, very bad. Or perhaps is good, very good,
but you need a Nvidia graphics card!

It seems that jogl has been developped by a company related to
Nvidia...

It is now about 8 month that I search to launch a plot in the new
Scilab-5 environment, without success! I have a Debian Lenny system on
a laptop with Intel card...

Roberto

ycollet

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Oct 13, 2008, 4:13:02 PM10/13/08

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> I think that using an nvidia or ati driver with an Intel card isn't a
> good idea!!!

Yes, you are right, but the original author doesn't give precisions
about his graphic card.
The rule is: if it's an intel graphic chip, there is currently no good
solution. See the wiki page here for some advices and some
explanations of the problem related to graphic cards:

http://wiki.scilab.org/Graphical_issues_with_Scilab_5.0

YC

ycollet

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Oct 13, 2008, 4:17:29 PM10/13/08

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If you are under linux and you build scilab from sources, you can also
try to replace the JOGL java library by a nightly build.
If your scilab is installed in /usr/local/scilab-5, you have to
install the jar files in /usr/local/scilab-5/share/scilab/thirparty
and the .so files in /usr/local/scilab-5/share/scilab/.libs

YC

Ulrich Althöfer

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Oct 14, 2008, 2:50:51 AM10/14/08

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Thanks for this info!
Is there a roadmap for realizing the future way with framebuffer, to
get off the pbuffer-knockout-system?
Ulrich Althöfer

Holger Nahrstaedt

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Oct 15, 2008, 4:50:45 PM10/15/08

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If you change the graphic driver from intel to vesa, you can get even
a intel card working together with scilab 5! I have direct rendering
and the plotting speed is good!

I use Kubuntu 8.10 with Mesa 7.2 and xserver-xorg 7.4 and i have a
intel video card x3100.

my changed xorg.conf:

Section "Module"
Load "glx"
Load "dri"
EndSection

Section "Device"
Identifier "Configured Video Device"
Option "UseFBDev" "true"
Driver "vesa"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection

Section "DRI"
Mode 0666
EndSection