.
Thread 1 (LWP 4380):
#0  XQueryExtension (dpy=dpy@entry=0xffffffffc088b800, name=name@entry=0x7f1caff1a8b2 "\276\001", major_opcode=major_opcode@entry=0x7fffc903c3e4, first_event=first_event@entry=0x7fffc903c3e8, first_error=first_error@entry=0x7fffc903c3ec) at ../../src/QuExt.c:43
        rep = {type = 128 '\200', pad1 = 169 '\251', sequenceNumber = 49285, length = 32540, present = 92 '\\', major_opcode = 23 '\027', first_event = 99 'c', first_error = 187 '\273', pad3 = 32540, pad4 = 65537, pad5 = 65537, pad6 = 3229827072, pad7 = 32540}
        req = <optimized out>
#1  0x00007f1cbaae4ec2 in XInitExtension (dpy=dpy@entry=0xffffffffc088b800, name=name@entry=0x7f1caff1a8b2 "\276\001") at ../../src/InitExt.c:47
        codes = {extension = -1341836000, major_opcode = 32540, first_event = -1064781824, first_error = -1}
        ext = <optimized out>
#2  0x00007f1cba4a541d in XextAddDisplay (extinfo=0x7f1cc085ab20, dpy=0xffffffffc088b800, ext_name=0x7f1caff1a8b2 "\276\001", hooks=0x7f1cb0053520, nevents=17, data=0x0) at ../../src/extutil.c:110
        dpyinfo = 0x7f1cc085a980
#3  0x00007f1cafec32f9 in glXGetCurrentDrawable () from /tmp/apport_sandbox_yrEbQW/usr/lib/fglrx/libGL.so.1
No symbol table info available.
#4  0x000000000000004b in ?? ()
No symbol table info available.
#5  0x00007fffc903c4a0 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.