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Old 09-25-2006, 03:25 AM   #1
Laurentia
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Registered: May 2006
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Unhappy Graphics-Problem ( XFree86, Nvidia Quadro FX3400, XRTAILab)


Hi,

As a total Linux newbie im managed (without asking dumb questions in any forum! which I'm very proud of )to install Debian (2.6.15), get online and make xrtailab (trai-3.3) working -almost....

I worked with this How-To: RTAI-TARGET-HOWTO.txt from rtai.org

in the end the xratilab-window opend but i couldn't see anything in the source and scope windows, unlessI changed the size of the Window quickly.
I tried to get rid of this graphics problem (error message I found: "Xlib: extension "XFree86-Dri" is missing on display" and glxinfo said "direct rendering:no")by installing a nvidia driver.
I used this How-To: debian-nvidia-dri-howto.txt

Well this didn't help at all, it even made it worse:
Now my xrtailab-window collapses as soon as I try to open a scope-window, leaving me an error message saying:
"Cannot find default scheme
Xlib: extension "GLX" missing on display ":0.0".
Insufficient GL support"

I tried to make anny sens out of this: XFree86_40/1.0-2880/README.txt from nvidia.com
-> I did put "nvidia" under /ect/modules because I couln't find the extensions "GLX", "NV-NVIDIA" und "NVIDIA-GLX" with xdpyinfo...

But this leaves me with the same problem (xrtailab-window collapsing) but the error message now reads
"Cannot find default scheme
Insufficient GL support"

Now I'm out of ideas
Since I'm still new to Linux I just don't know the key-commands to find out whats wrong.
I hope anyone here is able to help me. I just can't belive I got this far only to fizzle at this rather embarrasing graphics problem!

Thank you very much,
Laura
 
Old 09-26-2006, 10:26 PM   #2
ciotog
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Registered: Mar 2004
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I'm not much of an expert on Debian, but I imagine you would have to configure X somehow. Personally I would edit /etc/X11/xorg.conf manually (or if you're using XFree86 it would be /etc/X11/XFree86.conf).

Could you post the contents of this file here? Preferably with any commented lines removed to make it easier to read (any line that starts with # can be deleted). My guess is that gl isn't enabled there properly.
 
Old 09-27-2006, 01:37 AM   #3
Laurentia
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Registered: May 2006
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Solved!

Hi,

I was quite afraid to mess with things I don't really understand, changed the content of my /etc/X11/XF86Config file (which seems to be the same as xorg.conf) according to a xorg.config file from a working system I found in the net:

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024"
EndSubSection

I also deleted the Subsections for Depth 0, 4, 6, 15, 16 etc.... that were there in my config file but not in the example I found.

That was it!
Thanks for the the effort ciotog.
Laura
 
Old 09-27-2006, 09:48 AM   #4
ciotog
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Hmm... Glad to hear it's working, but I doubt changing the Screen section would be enough to solve the problems you were having. There must have been more differences (for example in the Module section)... Unless you had multiple Device sections and now it's referring to the correct one.

Anyway, it sounds like you're catching on quickly.
 
  


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