Here's the backtrace. I don't currently have the bandwidth to upload a core dump.
#0 0x00007fffe9fd18ce in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#1 0x00007fffe9dfb866 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#2 0x00007fffe9dfba5a in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#3 0x00000000004db71b in gr_opengl_save_screen ()
at graphics/gropengl.cpp:1028
#4 0x00000000007ce20f in popup_do (pi=0x14a63a0 <Popup_info>, flags=67175424)
at popup/popup.cpp:821
#5 0x00000000007ce8a9 in popup (flags=67175424, nchoices=3)
at popup/popup.cpp:1013
#6 0x00000000005de142 in player_tips_popup () at menuui/playermenu.cpp:1347
#7 0x00000000005c4e2d in main_hall_do (frametime=0,25)
at menuui/mainhallmenu.cpp:840
#8 0x0000000000417aa2 in game_do_state (state=1)
at freespace2/freespace.cpp:6466
#9 0x00000000004c1acf in gameseq_process_events ()
at gamesequence/gamesequence.cpp:409
#10 0x0000000000418a58 in game_main (cmdline=0x2261cc0 "")
at freespace2/freespace.cpp:7062
#11 0x0000000000418c58 in main (argc=1, argv=0x7fffffffdfa8)
at freespace2/freespace.cpp:7196