<div dir="ltr">You were on the right track with DISPLAY=:0 but I'm wondering if you setup a "virtual" monitor or if your "paraview" user is auto logged in a X session or if it stuck at the "login" panel?<div><br></div><div>You can find some information about the virtual screen here: (Search for "Screen")</div><div><br></div><div><a href="http://kitware.github.io/paraviewweb/docs/guides/graphics_on_ec2_g2.html" target="_blank">http://kitware.github.io/paraviewweb/docs/guides/graphics_on_ec2_g2.html</a><br></div><div><br></div><div>And for the autologin if it is needed. (Note on EC2 the user start X hence no need to login...)</div><div><br></div><div><a href="https://github.com/Kitware/paraviewweb/blob/master/tools/ansible/roles/paraview/tasks/Ubuntu.yml" target="_blank">https://github.com/Kitware/paraviewweb/blob/master/tools/ansible/roles/paraview/tasks/Ubuntu.yml</a><br></div><div><br></div><div>Seb</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, May 5, 2016 at 6:58 AM, Jiří Vyskočil <span dir="ltr"><<a href="mailto:jiri.vyskocil@fjfi.cvut.cz" target="_blank">jiri.vyskocil@fjfi.cvut.cz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
<br>
I'm trying to set up a Paraview Web server on a Fedora 23 machine. The serves is not connected to a monitor or a keyboard (I only have access through ssh), but it has a nvidia GPU which I want to use for paraview.<br>
<br>
<br>
I have installed xdm to run the X server, and verified that it is in fact running with the correct nvidia drivers (by checking the Xorg.0.log file). The problem is I don't know how to run the paraview webserver on the X display when there's no one physically logged in - I can only get to the server via ssh. When I log in, and switch to the paraview user, the DISPLAY and XAUTHORITY variables are empty.<br>
<br>
<br>
The webserver itself is running (apache + the python launcher), but when I try to open any of the example applications, I get an error like this:<br>
<br>
<br>
$ ./launch-paraview.sh<br>
2016-05-05 14:54:17,528:INFO:twisted:Site starting on 9000<br>
2016-05-05 14:54:17,528:INFO:twisted:Starting factory <twisted.web.server.Site instance at 0x7fe20da6a998><br>
2016-05-05 14:55:09,655:INFO:twisted:"127.0.0.1" - - [05/May/2016:12:55:09 +0000] "POST /paraview/ HTTP/1.1" 503 78 "<a href="https://vbl-sim.eli-beams.eu/apps/Visualizer/" rel="noreferrer" target="_blank">https://vbl-sim.eli-beams.eu/apps/Visualizer/</a>" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0"<br>
<br>
<br>
$ cat 965318f2-12c0-11e6-a3cb-002590e6af35.txt<br>
2016-05-05 14:55:06+0200 [-] Log opened.<br>
ERROR: In /home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx, line 333<br>
vtkXOpenGLRenderWindow (0x3f00be0): bad X server connection. DISPLAY=<br>
<br>
<br>
Specifying DISPLAY=:0 when running the launcher gives this error:<br>
<br>
$ cat e73921bc-12c0-11e6-b002-002590e6af35.txt<br>
2016-05-05 14:57:22+0200 [-] Log opened.<br>
No protocol specified<br>
No protocol specified<br>
No protocol specified<br>
ERROR: In /home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx, line 333<br>
vtkXOpenGLRenderWindow (0x4127c10): bad X server connection. DISPLAY=:0. Aborting.<br>
<br>
<br>
<br>
Thanks for any hints,<br>
<br>
Jiri<br>
<br>
<br>
<br>
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