Hi Julien, I have finally repro-ed the crash. Attached is the gdb log and Xorg log.
Please let me know if you need anything else. Core dump? I am a developer, too, but not familiar with Xorg codebase. Thanks Matthew On 09/10/11 03:08 AM, Julien Cristau wrote:
On Sat, Oct 8, 2011 at 17:18:15 -0700, Matthew Lai wrote:Package: xserver-xorg Version: 1:7.6+8 Severity: critical Tags: upstream Justification: causes serious data loss Dear Maintainer, I am seeing Xorg crashing to gdm without any obvious pattern, though it seems to happen a lot more when I'm laying out circuits in KiCad (but I cannot find repro steps). It has happened with just Firefox open, too. It happens about every hour when I use KiCad, otherwise every few days. Thanks! The laptop has Intel integrated graphics (in Core i3) and an nVidia card (Optimus/hybrid switching), but the nVidia card is not used and is powered off through ACPI, with the driver (nouveau) blacklisted. Here is Xorg.0.old after a crash. The callstack refers to Intel driver, but I don't know where the problem is. I tried installing as many related debugging symbols packages as I can find, but it looks like some function names are still not resolved.You should use gdb to get a backtrace, see http://wiki.debian.org/XStrikeForce/XserverDebugging Cheers, Julien
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x00007fa3353ff70c in fbBresSolid (pDrawable=<optimized out>,
pGC=<optimized out>, dashOffset=<optimized out>, signdx=-1, signdy=-4,
axis=0, x1=<optimized out>, y1=0, e=<optimized out>, e1=8, e3=-10, len=0)
at ../../fb/fbseg.c:88
88 ../../fb/fbseg.c: No such file or directory.
in ../../fb/fbseg.c
#0 0x00007fa3353ff70c in fbBresSolid (pDrawable=<optimized out>,
pGC=<optimized out>, dashOffset=<optimized out>, signdx=-1, signdy=-4,
axis=0, x1=<optimized out>, y1=0, e=<optimized out>, e1=8, e3=-10, len=0)
at ../../fb/fbseg.c:88
dst = 0x7fa332f16ffc
dstStride = <optimized out>
dstBpp = 32
dstXoff = <optimized out>
dstYoff = <optimized out>
pPriv = 0x7fa332f16ffc
and = <optimized out>
xor = 40960
mask = 4294967295
mask0 = 4294967295
bits = <optimized out>
#1 0x00007fa335400ba7 in fbSegment (pDrawable=0x31d1f10, pGC=0x3147630, x1=3,
y1=-2, x2=-2, y2=2, drawLast=0, dashOffset=0x7fff398b036c)
at ../../fb/fbseg.c:715
new_x1 = 1
new_y2 = 0
clip1 = 2
clipdx = <optimized out>
err = <optimized out>
new_y1 = 0
new_x2 = 0
clip2 = 8
clipdy = <optimized out>
bres = 0x7fa3353ff4f0 <fbBresSolid>
pClip = <optimized out>
pBox = 0x3147a58
nBox = 1
adx = 5
ady = 4
signdx = -1
signdy = 1
e = -6
e1 = 8
e2 = <optimized out>
e3 = -10
len = <optimized out>
axis = 0
octant = 4
dashoff = 515
doff = <optimized out>
bias = 216
oc1 = <optimized out>
oc2 = <optimized out>
#2 0x00007fa3353f4ddd in fbPolySegment32 (pDrawable=0x31d1f10, pGC=0x3147630,
nseg=<optimized out>, pseg=<optimized out>) at ../../fb/fbbits.h:847
pts = 0x3209fd0
xoff = 1146
yoff = 0
bias = 216
dst = 0x7fa332f17000
dstStride = 1152
dstXoff = 0
dstYoff = 0
bits = <optimized out>
bitsBase = 0x7fa332f17000
bitsStride = 1152
xorBits = 40960
andBits = 4294926335
xor = 40960
and = 4294926335
dashoffset = 520
ul = 0
lr = 35259514
pt1 = <optimized out>
pt2 = <optimized out>
e = <optimized out>
e1 = <optimized out>
e3 = <optimized out>
len = <optimized out>
stepmajor = <optimized out>
stepminor = <optimized out>
octant = <optimized out>
capNotLast = 1
#3 0x00007fa335e52765 in uxa_check_poly_segment (pDrawable=0x31d1f10,
pGC=0x3147630, nsegInit=379, pSegInit=0x3209f78)
at ../../uxa/uxa-unaccel.c:218
screen = <optimized out>
__FUNCTION__ = "uxa_check_poly_segment"
#4 0x00000000004fc65f in damagePolySegment (pDrawable=0x31d1f10,
pGC=0x3147630, nSeg=379, pSeg=<optimized out>)
at ../../../miext/damage/damage.c:1096
pGCPriv = 0x31476f8
oldFuncs = 0x7d86e0
#5 0x0000000000434113 in ProcPolySegment (client=0x30ebf70)
at ../../dix/dispatch.c:1769
nsegs = <optimized out>
pGC = 0x3147630
pDraw = 0x31d1f10
stuff = 0x3209f6c
#6 0x0000000000437ae9 in Dispatch () at ../../dix/dispatch.c:432
clientReady = 0x2f76600
result = <optimized out>
client = 0x30ebf70
nready = 0
icheck = 0x7eadd0
start_tick = 15160
#7 0x0000000000426eaa in main (argc=12, argv=<optimized out>,
envp=<optimized out>) at ../../dix/main.c:287
i = <optimized out>
alwaysCheckForInput = {0, 1}
Xorg.0.log.old
Description: application/trash
