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hlrs-vis / covise

Collaborative Visualization and Simulation Environment, OpenCOVER and OddLOT
http://www.hlrs.de/covise/
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OpenCOVER display issues #15

Closed laurenegts closed 9 years ago

laurenegts commented 9 years ago

Hello,

I can open up and display basic X11 apps like xterm but when I launch opencover, I get these errors about the display. ( I assume not finding that one plugin is not a show stopper ). Any advice ? Thanks again in advance!

502] [hxgpu0] $opencover _exec_for_covise OpenCOVER: Starting up

Compiled with OpenMP support, using a maximum of 1 threads Input: Persons must be configured! plugins: const devices: buttons: Mouse bodies: persons: num=1, active=default, head=0, hand=0 Loading plugins: SGBrowser Vrml97 ClipPlane PLMXML ALVAR/hx/u/legts/covise/pangolin/lib/OpenCOVER/plugins/libALVAR.so: cannot open shared object file: No such file or directory

libALVAR.so: cannot open shared object file: No such file or directory ERROR: could not load shared Library libALVAR.so . Plugins which failed to load: ALVAR. Error: Unable to open display ":0.0". No valid Pixel Format found, trying without multisample Buffer Error: Unable to open display ":0.0". No valid Pixel Format found, trying without stencil Error: Unable to open display ":0.0". No valid Pixel Format found, trying without alpha Error: Unable to open display ":0.0". VRWindow::createWin 0 --- finished window 0 of screen 0 not defined A Unable to open display ":0.-1" Viewer::realize() - failed to set up any windows PLMXMLPlugin::PLMXMLPlugin host: localhost, port: 31231 connecting to audio server "localhost" at port 31231...connecting socket failed: Connection refused OpenCOVER: Shutting down

Unloading plugins: ClipPlane PLMXML SGBrowser Vrml97destruction of 0 sources

aumuell commented 9 years ago

The X11 display OpenCOVER tries to open is not controlled by the DISPLAY environment variable but by the settings in its configuration file, typically $COVISEDIR/config/config.xml. Could it be that you are accessing the machine where you try to start OpenCOVER remotely via SSH and your DISPLAY is set accordingly? This would explain why xterm works.

For efficient OpenGL rendering you should start OpenCOVER on the machine where you have your display device connected. But you also have to configure the X server on that machine such that OpenCOVER is allowed to access it. If you share the machine only with trusted users, something like xhost +LOCAL: directly after the X server has been started, should help. Where you have to put such a command depends on your display manager (XDM, KDM, LightDM, ...).

laurenegts commented 9 years ago

Yes, I am accessing the machine that I am trying to run OpenCOVER on via SSH. I will attempt to configure the X server so that OpenCOVER is allowed to access it! I will keep you updated.

laurenegts commented 9 years ago

Thanks for the help, but we're still having troubles! Maybe it would help to explain our setup. We are running OpenCOVER on a machine named "hxgpu0". Our display is running on a machine called "hxv142c". We added to the config.xml file the line:

Then, on hxv142c we did the following commands: xhost +hxgpu0 But when we ran OpenCOVER, the following errors resulted. Any advice? Apparently the missing shared objects are not on our system. Thanks in advance. 558] [hxgpu0] $/hx/u/legts/covise/bin/opencover _exec_for_covise coConfigRoot::setContentsFromDom info: ALREADY INCLUDED: filename: config.xml Compiled with OpenMP support, using a maximum of 1 threads No PipeConfig for Pipe 0 found, using DISPLAY=:0 Input: Persons must be configured! plugins: const devices: buttons: Mouse bodies: persons: num=1, active=default, head=0, hand=0 libScale.so: cannot open shared object file: No such file or directory ERROR: could not load shared Library libScale.so libViewerDistance.so: cannot open shared object file: No such file or directory ERROR: could not load shared Library libViewerDistance.so libFadeDistance.so: cannot open shared object file: No such file or directory ERROR: could not load shared Library libFadeDistance.so Plugins which failed to load: Scale ViewerDistance FadeDistance. Error: Unable to open display ":0.0". No valid Pixel Format found, trying without multisample Buffer Error: Unable to open display ":0.0". No valid Pixel Format found, trying without stencil Error: Unable to open display ":0.0". No valid Pixel Format found, trying without alpha Error: Unable to open display ":0.0". VRWindow::createWin 0 --- finished Segmentation fault
aumuell commented 9 years ago

Sorry that I missed this issue for such a long time.

The following message indicates a problem where your COVISE/COVER configuration does not match your set up:

No PipeConfig for Pipe 0 found, using DISPLAY=:0

Your set up is unusual, as you do not want to use the X server where you run OpenCOVER. Unfortunately, a PipeConfig won't help in your case, as OpenCOVER currently does not support reading a host for its X11 display from its config file.

One possible work-around could be to add the line <HonourDisplay value="true" /> to your config.xml somewhere within <GLOBAL><COVER>...</COVER></GLOBAL> and set DISPLAY according to your needs.