Version-Release number of selected component: firefox-21.0-3.fc18 Additional info: reporter: libreport-2.1.4 backtrace_rating: 4 cmdline: /usr/lib64/firefox/firefox https://bugzilla.redhat.com/createaccount.cgi crash_function: r300_create_context executable: /usr/lib64/firefox/firefox kernel: 3.9.4-200.fc18.x86_64 runlevel: N 5 uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 r300_create_context at r300_context.c:443 #1 st_api_create_context at ../../src/mesa/state_tracker/st_manager.c:618 #2 dri_create_context at dri_context.c:124 #3 dri2CreateContextAttribs at ../../../../src/mesa/drivers/dri/common/dri_util.c:288 #4 dri2CreateNewContextForAPI at ../../../../src/mesa/drivers/dri/common/dri_util.c:306 #5 dri2_create_context at dri2_glx.c:230 #6 CreateContext at glxcmds.c:274 #7 glXCreateContext at glxcmds.c:379 #8 glxtest at /usr/src/debug/xulrunner-21.0/mozilla-release/toolkit/xre/glxtest.cpp:177 #9 fire_glxtest_process at /usr/src/debug/xulrunner-21.0/mozilla-release/toolkit/xre/glxtest.cpp:234
Created attachment 756061 [details] File: backtrace
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Created attachment 756071 [details] File: xsession_errors
r300_create_context() is not from firefox itself, seems to be caused by HW acceleration. Are you able to start firefox or not? If so, can you attach the acceleration part of "about:support" page? It would also help to disable OpenGL acceleration - https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration
IIRC there's some env variable which disables the HW acceleration, but I can't find it now.