On 18 Apr 2003, Viktor Hornak wrote: >On Fri, 2003-04-18 at 10:53, Mike A. Harris wrote: >> On 18 Apr 2003, Viktor Hornak wrote: >> >> >I came across the problem with glut after upgrading from 8.0 to 9. The >> >application I was using (pymol.sf.net) ran fine under 8.0 but after >> >upgrade to 9 it doesn't work any more and the following error message is >> >displayed: >> > >> >ImportError: /usr/lib/libglut.so.3: undefined symbol: >> >XGetExtensionVersion >> > >> >When I downgrade from 9's versions (glut-3.7-12, glut-devel-3.7-12) back >> >to 8.0's (glut-3.7-8, glut-devel-3.7-8) it works again. That's strange >> >because glut hasn't changed for quite a while (version 3.7) and I cannot >> >see why the symbol definitions would change. >> >> Using Nvidia hardware and proprietary drivers I presume? >> -- >> Mike A. Harris ftp://people.redhat.com/mharris > >Yes, that's right. I know these aren't supported but I was also using >them without any problem on 8.0. Would downgrading glut in 9 cause any >stability problems? Very few applications in standard install depend on >glut. This problem only seems to show up with nvidia's drivers aparently, however it appears to be due to Nvidia not implementing a few things in libGL, and glut expecting them to be there. It's somewhat weird because we've shipped the same version of glut for 3 distribution releases now and the problem is only being reported in the last few weeks. While it is true that we don't support Nvidia's drivers, and this problem only seems to occur with the Nvidia drivers, the problem seems to be in the glut library assuming certain features are available in the libGL implementation installed. Mesa supports them, but Nvidia doesn't. At least this is my current understanding. There is no fix or workaround currently however I will be trying to work this issue out in rawhide during the upcoming development cycle. When it's resolved, I'll stuff some new glut rpms for RHL 9 and any other affected releases somewhere also. In the mean time, you can work around the issue, by downloading the mesa3d source code, and using the glut library that comes with Mesa instead. What I will probably do for the distro, is switch from the official SGI glut we have now, to the Mesa included glut library for the next release. Hope this helps. -- Mike A. Harris ftp://people.redhat.com/mharris OS Systems Engineer - XFree86 maintainer - Red Hat
