Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1211447632 (LWP 13863)]
0xb7c1db66 in DRIDoBlockHandler (screenNum=0, blockData=0x0, pTimeout=0x0, pReadmask=0x0) at dri.c:1399
1399    dri.c: No such file or directory.
        in dri.c
(gdb) bt f
#0  0xb7c1db66 in DRIDoBlockHandler (screenNum=0, blockData=0x0, pTimeout=0x0, pReadmask=0x0) at dri.c:1399
        pScreen = (ScreenPtr) 0x82a9410
        pDRIPriv = (DRIScreenPrivPtr) 0x0
#1  0xb7bf1ad2 in __glXDRIleaveServer () at glxdri.c:127
        i = 0
#2  0xb7bca79b in __glXleaveServer () at glxext.c:416
No locals.
#3  0xb7bca8fc in __glXDispatch (client=0x83b6960) at glxext.c:479
        stuff = (xGLXSingleReq *) 0x83b6bb0
        opcode = 7 '\a'
        proc = (int (*)(__GLXclientState *, GLbyte *)) 0xb7bc31d8 <__glXQueryVersion>
        cl = (__GLXclientState *) 0x83b8c78
        retval = 0
#4  0x08083f60 in Dispatch () at dispatch.c:459
        clientReady = (int *) 0xbfa1e1e0
        result = 12
        client = (ClientPtr) 0x83b6960
        nready = 0
        icheck = (HWEventQueuePtr *) 0x822d384
        start_tick = 580
#5  0x0806e212 in main (argc=1, argv=0xbfa1e6f4, envp=0xbfa1e6fc) at main.c:447
        i = 1
        j = 2
        k = 2
        error = 0
        xauthfile = 0x0
        alwaysCheckForInput = {0, 1}