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davydm
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Joined: 06 Jan 2017
Posts: 13

PostPosted: Thu Aug 16, 2018 3:54 pm    Post subject: Celestia issues Reply with quote

I hope this is the right place to post this; please shout if I should move this somewhere else, but it seemed like the closest fit:

OpenGL is working fine on my system -- Steam games, glxgears, glxinfo (reports NVIDIA vendor, so all good). I'm using x11-drivers/nvidia-drivers=396.51 from official gentoo sources.

Today I installed Celestia so my son could check it out. The app shows the splash screen, then exits. From a console, I get a little more info by running:
Code:

# LIBGL_DEBUG=verbose celestia
libGL: screen 0 does not appear to be DRI2 capable
libGL: OpenDriver: trying /usr/lib64/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib64/dri/swrast_dri.so
libGL: Can't open configuration file /home/daf/.drirc: No such file or directory.
libGL: Can't open configuration file /home/daf/.drirc: No such file or directory.
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
*** Cannot find the double-buffered visual.
*** Trying single-buffered visual.
*** No appropriate OpenGL-capable visual found.


Everything my google-fu has brought me suggests that I should get this error for anything attempting to use opengl if I'm getting it for one. The mentioned .so files under /usr/lib64 exist. I apparently have the correct opengl selected:
Code:

# eselect opengl list
  [1]   nvidia *
  [2]   xorg-x11


As far as I can tell, Celestia should just run; yet stubbornly, it refuses to. Any help appreciated.
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davydm
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Joined: 06 Jan 2017
Posts: 13

PostPosted: Thu Aug 16, 2018 4:08 pm    Post subject: Reply with quote

(update) I can work around this by changing /usr/lib64/libGL.so and /usr/lib64/libGL.so.1 to point at nvidia's libGL.so (they were pointing at mesa's) -- the question is: shouldn't
Code:
eselect opengl set
be doing this? Or is there a another better (more official) way to do this? And what repercussions can I face by manualy fiddling with these two links?
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