(gdb) break exa_unaccel.c:759
Breakpoint 1 at 0x7fd32a03ea1a: file exa_unaccel.c, line 759.

(gdb) cont
Continuing.

Breakpoint 1, exaGetPixmapFirstPixel (pPixmap=0x13b5970) at exa_unaccel.c:759
759		FatalError("%s called for invalid bpp %d\n", __func__,
(gdb) bt
#0  exaGetPixmapFirstPixel (pPixmap=0x13b5970) at exa_unaccel.c:759
#1  0x00007fd32a038217 in exaFillRegionTiled (pDrawable=0x14ee1c0, pRegion=0x1402290, pTile=0x13b5970, pPatOrg=0x13f6e38, planemask=4294967295, alu=3, clientClipType=0) at exa_accel.c:1105
#2  0x00007fd32a038875 in exaPolyFillRect (pDrawable=0x14ee1c0, pGC=0x13f6df0, nrect=1, prect=0x151dbf4) at exa_accel.c:821
#3  0x00000000004ac8b1 in damagePolyFillRect (pDrawable=0x14ee1c0, pGC=0x13f6df0, nRects=1, pRects=0x151dbf4) at damage.c:1396
#4  0x00000000004282e5 in ProcPolyFillRectangle (client=<value optimized out>) at dispatch.c:1868
#5  0x000000000042b02e in Dispatch () at dispatch.c:432
#6  0x00000000004215da in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at main.c:291

(gdb) bt full
#0  exaGetPixmapFirstPixel (pPixmap=0x13b5970) at exa_unaccel.c:759
        __func__ = "exaGetPixmapFirstPixel"
#1  0x00007fd32a038217 in exaFillRegionTiled (pDrawable=0x14ee1c0, pRegion=0x1402290, pTile=0x13b5970, pPatOrg=0x13f6e38, planemask=4294967295, alu=3, clientClipType=0) at exa_accel.c:1105
        pExaScr = 0x11a6720
        pPixmap = <value optimized out>
        pExaPixmap = <value optimized out>
        pTileExaPixmap = <value optimized out>
        xoff = 32767
        yoff = -1394586400
        tileWidth = 1
        tileHeight = 1
        nbox = <value optimized out>
        pBox = 0x1402290
        ret = 0
        i = <value optimized out>
#2  0x00007fd32a038875 in exaPolyFillRect (pDrawable=0x14ee1c0, pGC=0x13f6df0, nrect=1, prect=0x151dbf4) at exa_accel.c:821
        pExaScr = 0x11a6720
        pClip = 0x13a8630
        pPixmap = 0x14ee1c0
        pExaPixmap = 0x14ee218
        pbox = <value optimized out>
        pextent = <value optimized out>
        extentX1 = <value optimized out>
        extentX2 = <value optimized out>
        extentY1 = <value optimized out>
        extentY2 = <value optimized out>
        fullX1 = <value optimized out>
        fullX2 = <value optimized out>
        fullY1 = <value optimized out>
        fullY2 = <value optimized out>
        partX1 = <value optimized out>
        partX2 = <value optimized out>
        partY1 = <value optimized out>
        partY2 = <value optimized out>
        xoff = 0
        yoff = 0
        xorg = <value optimized out>
        yorg = <value optimized out>
        n = <value optimized out>
        pReg = 0x1402290
#3  0x00000000004ac8b1 in damagePolyFillRect (pDrawable=0x14ee1c0, pGC=0x13f6df0, nRects=1, pRects=0x151dbf4) at damage.c:1396
        pGCPriv = 0x13f6ec8
        oldFuncs = 0x785ee0
#4  0x00000000004282e5 in ProcPolyFillRectangle (client=<value optimized out>) at dispatch.c:1868
        things = <value optimized out>
        pGC = 0x13f6df0
        pDraw = 0x14ee1c0
        stuff = 0x151dbe8
#5  0x000000000042b02e in Dispatch () at dispatch.c:432
        clientReady = 0x13b9970
        result = 0
        client = 0x13ede20
        nready = 0
        icheck = 0x798130
        start_tick = 1040
#6  0x00000000004215da in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at main.c:291
        i = <value optimized out>
        alwaysCheckForInput = {0, 1}