Something changed in mesa-0.7.8-3 (0.7.8-2 was ok, and 7.9-0.1 is ok again), that prevents FlightGear to obtain a visual with the needed requirements. I could reproduce the bug with the nouveau driver, and the radeon driver too. The relevant part of the code is in OpenSceneGraph-2.8.2/src/osgViewer/GraphicsWindowX11.cpp:266 (function GraphicsWindowX11::createVisualInfo()) The pushed attributes are: GLX_USE_GL GLX_RGBA GLX_DOUBLEBUFFER GLX_RED_SIZE 8 GLX_GREEN_SIZE 8 GLX_BLUE_SIZE 8 GLX_DEPTH_SIZE 24 GLX_STENCIL_SIZE 8
aaah, the LIBGL_DIAGNOSTIC variable helped me to find the problem : WARNING: unknown GLX tag from server: tag 0x1 value 0x4 WARNING: unknown GLX tag from server: tag 0x1 value 0x4 Error: Not able to create requested visual. -> GLX_RGBA is considered as the value the (unknown) tag GLX_USE_GL
Created attachment 422370 [details] backport fix from mesa-7.9
I've reproduced the bug with: mesa-libGL-7.8.1-6.fc13.x86_64 FlightGear-2.0.0-1.fc13.x86_64 I've verified that the attached patch fixes the bug. srpm: http://fcami.fedorapeople.org/srpms/mesa-7.8.1-7.fc13.src.rpm spec: http://fcami.fedorapeople.org/srpms/mesa.spec Feel free to edit the changelog. Warning, the current libdrm-devel in F13 breaks the Mesa build. I had to downgrade to libdrm-devel-2.4.20-1.fc13 to rebuild Mesa.
mesa-7.8.1-8.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/mesa-7.8.1-8.fc13
mesa-7.8.1-8.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update mesa'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/mesa-7.8.1-8.fc13
mesa-7.8.1-8.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.