Grey screen in paraview
While trying to visualize some results, I bumped into this error:
X Error: GLXBadContextTag ...
After some searching, e.g. http://www.openfoam.org/mantisbt/view.php?id=21
I realized it was a matter of my OpenGL drivers.
I followed this procedure to update them
and ever since I can not see the results in the main screen of the remote server.
The main window of the 3D view remains grey unless I try to rotate the geometry or something. In this case, the screen returns momentarily to the normal state.
My card is ATI radeon 5450, I am running OpenSUSE 11.4 32-bit.
My paraview versions are 3.12.0 64-bit in the remote server and 3.10.1 32-bit in my computer.
Downloading the case files to visualize them in my computer is out of the question (281Gb).
Mmm... usually upgrading drivers can be a double edge sword: the update might actually break things, due to another bug in the newer package...
So sometimes, downgrading or checking one version at a time might prove a better solution.
Also, you can try this option:
I've tried to compile a list of other findings that people have made concerning ParaView and graphics card drivers and so on... here: Related issues to ParaView with OpenFOAM - Fixes and solutions
Hey Bruno, thanks for your answer!
I checked the material you suggested and indeed I found many common elements with my case (ATI graphics card, pre-update segmentation faults when I tried to change the color map, etc).
First, I changed directly to Vesa (I thought that this one should be working, no matter what). Everything looked horrible and I got the following error in paraview (I was redirected to the OpenSUSE login screen after that - kind of like a crash):
In any case, I would be content if paraview works correctly in python script mode, so I can export some images. Do you think it would act in the same way? How can I try it? (never done this before)
Also, is it normal that it only happens for remote viewing of results?
paraview works PERFECTLY with my local version.
What about downgrading paraview in the remote server instead?
You can also choose another GPU card, in case the server has more than one.
If you are able to build the ParaView server version with OSMesa support, it will then use the CPU for generating the images, through the off-screen rendering option.
The odd thing is that I tried connecting through another computer with very similar hardware and software and everything worked just fine!
So it does not seem to be something on the side of the server (I guess).
I will check at some point the differences and post them.
i am not shure if this is somehow related but...
had the same issue under ubuntu 10.4 lts.
it proved out to be caused by a compiz issue: after disabling the graphic effects it disappeared.
sorry I'm on my windows machine right now. if neded i can provide step by step instructions on how to do it.
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