Description of problem: possibly connected to https://bugzilla.redhat.com/show_bug.cgi?id=1052975 Version-Release number of selected component: gnome-session-3.10.1-1.fc20 Additional info: reporter: libreport-2.1.11 backtrace_rating: 4 cmdline: /usr/libexec/gnome-session-check-accelerated-helper crash_function: xcb_glx_query_server_string_string_length executable: /usr/libexec/gnome-session-check-accelerated-helper kernel: 3.12.7-300.fc20.x86_64 runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (7 frames) #0 xcb_glx_query_server_string_string_length at glx.c:2448 #1 __glXQueryServerString at glx_query.c:55 #2 AllocAndFetchScreenConfigs at glxext.c:764 #3 __glXInitialize at glxext.c:879 #4 GetGLXPrivScreenConfig at glxcmds.c:174 #6 glXChooseVisual at glxcmds.c:1251 #7 _has_hardware_gl at gnome-session-check-accelerated-helper.c:258
Created attachment 849973 [details] File: backtrace
Created attachment 849974 [details] File: cgroup
Created attachment 849975 [details] File: core_backtrace
Created attachment 849976 [details] File: dso_list
Created attachment 849977 [details] File: environ
Created attachment 849978 [details] File: exploitable
Created attachment 849979 [details] File: limits
Created attachment 849980 [details] File: maps
Created attachment 849981 [details] File: open_fds
Created attachment 849982 [details] File: proc_pid_status
Created attachment 849983 [details] File: var_log_messages
Created attachment 849984 [details] commands used for report
problem found : previous install of AMD / ATI proprietary fglrx drivers overwrote some libs. yum -y reinstall mesa* xorg-x11* corrected the problem. closing.