(gdb) 
(gdb) bt full
#0  0x080dd7d1 in xf86XVRegetVideo (portPriv=0x8258a98) at ../../../../hw/xfree86/common/xf86xv.c:716
        WinRegion = {extents = {x1 = 64, y1 = 0, x2 = 1, y2 = 0}, data = 0x80dd7bd}
        ClipRegion = {extents = {x1 = 0, y1 = 0, x2 = -32184, y2 = 2085}, data = 0x8257e40}
        ret = 69
#1  0x080ddc85 in xf86XVReputAllVideo (pWin=0x83823f0, data=0x0) at ../../../../hw/xfree86/common/xf86xv.c:953
        WinPriv = (XF86XVWindowPtr) 0x83825e0
#2  0x08078ffe in TraverseTree (pWin=0x825dc10, func=0x80ddc50 <xf86XVReputAllVideo>, data=0x0) at ../../dix/window.c:233
        result = <value optimized out>
        pChild = <value optimized out>
#3  0x08079078 in WalkTree (pScreen=0x8214cb0, func=0x80ddc50 <xf86XVReputAllVideo>, data=0x0) at ../../dix/window.c:261
No locals.
#4  0x080ddd18 in xf86XVEnterVT (index=0, flags=0) at ../../../../hw/xfree86/common/xf86xv.c:1236
        pScreen = (ScreenPtr) 0x8214cb0
        ret = 1
#5  0xb7cc133a in glxDRIEnterVT (index=0, flags=0) at ../../../GL/glx/glxdri.c:837
No locals.
#6  0x080c9d5d in xf86Wakeup (blockData=0x0, err=-1, pReadmask=0x82004a0) at ../../../../hw/xfree86/common/xf86Events.c:1608
        devicesWithInput = {fds_bits = {-1211680308, 136400048, 0, 0, 0, 0, 0, 0, -1211785364, 136389824, 136400048, -1081624856, -1211815132, 0, 0, -1, 136316064, 0, 0, 0, -1211663316, 0, 136310400, -1081624808, -1211684477, 0, 0, -1, 136316064, 0, 0, -1211684565}}
        pInfo = <value optimized out>
#7  0x080929f9 in WakeupHandler (result=-1, pReadmask=0x82004a0) at ../../dix/dixutils.c:448
        i = <value optimized out>
        j = -1348357148
#8  0x081b94be in WaitForSomething (pClientsReady=0xbf87b9c0) at ../../os/WaitFor.c:241
        i = -1
        waittime = {tv_sec = 139343736, tv_usec = 0}
        wt = (struct timeval *) 0x0
        timeout = <value optimized out>
        clientsReadable = {fds_bits = {0 <repeats 32 times>}}
        clientsWritable = {fds_bits = {0, 0, 60, 60, -1081624392, 1, -1081624268, -1209399688, -1081624268, 29, 0, 136201888, 139348176, 1, -1081624360, 136069070, 29, -1081624268, 1, -1211165044, 137896944, 136201888, -1081624328, 136064207, 139348176, -1081624268, 1, 136045230, 138236040, -1081624236, -1081624232, 136044202}}
        curclient = <value optimized out>
        selecterr = 4
        nready = <value optimized out>
        devicesReadable = {fds_bits = {136201888, 0, -1209694314, 136055322, 3932220, 3932220, 0, 3932220, 0, 0, 1184784158, -626815660, 0, -626815660, -1081624472, 134803381, 0, -626815660, 0, -626815660, 136201888, -626815660, 0, -1211165044, 60, 60, -1081624360, -1211214892, 139477784, 137896944, 136676792, 139589232}}
        now = <value optimized out>
        someReady = 0
#9  0x0808ec32 in Dispatch () at ../../dix/dispatch.c:383
        result = 0
        client = (ClientPtr) 0x8504318
        nready = -1
        start_tick = 333560
#10 0x08076e95 in main (argc=10, argv=0xbf87bed4, envp=0xb7fea8d0) at ../../dix/main.c:477
        pScreen = <value optimized out>
        i = <value optimized out>
        error = -1210183588
        xauthfile = <value optimized out>
        alwaysCheckForInput = {0, 1}
(gdb)