That message means "invalid/unsupported buffer format" ( http://sources.debian.net/src/mesa/10.3.2-1/src/mesa/drivers/dri/nouveau/nv10_state_fb.c ), and as it appears to refer to an internal nouveau buffer rather than a passed-in texture, I suspect this is actually a mesa/nouveau bug.
As I do not have the hardware to test this myself, please do (in a terminal): $ sudo apt-get install libgl1-mesa-dri-dbg gdb $ gdb --args fgfs [or gdb --args stellarium, whichever is easier to reproduce the crash in] (gdb) set pagination 0 (gdb) run [wait for crash] (gdb) thread apply all bt full and post the ouput here. ** Changed in: mesa (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1079011 Title: stellarium assert failure: nv10_state_fb.c:50: get_rt_format: Assertion `0' failed. Status in “flightgear” package in Ubuntu: New Status in “mesa” package in Ubuntu: Incomplete Status in “stellarium” package in Ubuntu: Confirmed Bug description: Stellarium crashes a few seconds after displaying the startup screen with this message in terminal: nv10_state_fb.c:50: get_rt_format: Assertion `0' failed. I have an nvidia GeForce4 MX 4000 video card, and have installed libgl1-mesa-dri and libgl1-mesa-dri-experimental, version 9.0-0ubuntu1. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: stellarium 0.11.3-1 ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7 Uname: Linux 3.5.0-18-generic i686 ApportVersion: 2.6.1-0ubuntu6 Architecture: i386 Date: Wed Nov 14 22:52:36 2012 InstallationDate: Installed on 2012-04-05 (224 days ago) InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) MarkForUpload: True ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: stellarium UpgradeStatus: Upgraded to quantal on 2012-10-20 (25 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/flightgear/+bug/1079011/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp