Program received signal SIGSEGV, Segmentation fault.
0x081a8624 in RRCrtcDetachScanoutPixmap (crtc=0x834ed80) at rrcrtc.c:370
370
(gdb) bt f
#0  0x081a8624 in RRCrtcDetachScanoutPixmap (crtc=0x834ed80) at rrcrtc.c:370
        master = 0x18
        ret = -1223076295
        mscreenpix = 0x8338b70
        pScrPriv = 0xb70c4ce0
#1  0x08112ba6 in xf86CrtcCloseScreen (screen=0x8350fe0) at xf86Crtc.c:738
        crtc = 0x83398b0
        scrn = 0x83380a8
        config = 0x8338b70
        o = 7
        c = 1
#2  0x080cb14d in DGACloseScreen (pScreen=0x8350fe0) at xf86DGA.c:288
        pScreenPriv = 0x835a3f0
#3  0x080cf751 in DPMSClose (pScreen=0x8350fe0) at xf86DPMS.c:130
        pDPMS = 0x8372430
        pScrn = 0x83380a8
#4  0x0814abe7 in XvCloseScreen (pScreen=0x8350fe0) at xvmain.c:311
        pxvs = 0x8351390
#5  0x081cd078 in SyncCloseScreen (pScreen=0x8350fe0) at misync.c:172
        pScreenPriv = 0x8372444
#6  0x08136d3c in CursorCloseScreen (pScreen=0x8350fe0) at cursor.c:205
        cs = 0x83610c8
        ret = 136096396
        close_proc = 0x8136ca0 <CursorCloseScreen>
        display_proc = 0x8136ad5 <CursorDisplayCursor>
        constrain_proc = 0x8138df1 <CursorConstrainCursorHarder>
#7  0x081cabb4 in AnimCurCloseScreen (pScreen=0x8350fe0) at animcur.c:106
        as = 0x8365460
        ret = -1074366248
#8  0x081322af in compCloseScreen (pScreen=0x8350fe0) at compinit.c:85
        cs = 0x83660c0
        ret = -1222052928
#9  0x080d6650 in VidModeClose (pScreen=0x8350fe0) at xf86VidMode.c:111
        pVidMode = 0x8366638
#10 0xb700f981 in glxCloseScreen (pScreen=Cannot access memory at address 0xbff67960
) at glxscreens.c:188
        pGlxScreen = <error reading variable pGlxScreen (Cannot access memory at address 0xbff6794c)>
Cannot access memory at address 0xbff6795c