On Thu, 2007-10-04 at 08:37 +0200, Brice Goglin wrote: > Andrew Ruthven wrote: > > Okay, I've installed xserver-xorg-core-dbg, but how do I tell X.org to > > use these debug modules instead? > > > There's nothing to do. The server still uses the same modules, but gdb > will know where to look for the corresponding debugging symbols that > xserver-xorg-core-dbg installed.
Really? I doesn't seem to be...
> > Program received signal SIGFPE, Arithmetic exception.
> > [Switching to Thread 0xb7c698c0 (LWP 4252)]
> > 0xb7b5407d in ?? () from /usr/lib/xorg/modules/drivers//mga_drv.so
> >
>
> Did you have such a SIGFPE before?
Nope. And when I run gdb /usr/bin/X11/Xorg it doesn't appear.
<snip>
> You should enter "bt full" here (at soon as gdb catches a crash).
<snip>
> Continuing like this gives the hand back to the server which catches its
> own crash and outputs the useless backtrace.
I had been using the Xdbg script which does the continue and just dumps
the log to a file.
I've just run gdb manually and grabbed the backtrace. Here it is:
(gdb) bt full
#0 0x00000000 in ?? ()
No symbol table info available.
#1 0xb7b06728 in ?? () from /usr/lib/xorg/modules/drivers//mga_drv.so
No symbol table info available.
#2 0x082193b8 in ?? ()
No symbol table info available.
#3 0xb7a7f000 in ?? ()
No symbol table info available.
#4 0x00001c00 in ?? ()
No symbol table info available.
#5 0xbfea4998 in ?? ()
No symbol table info available.
#6 0xb7d48090 in malloc () from /lib/libc.so.6
No symbol table info available.
#7 0x08073c9c in AddScreen (pfnInit=0xb7b065d0, argc=1,
argv=0xbfea4b74)
at ../../dix/main.c:769
i = 0
scanlinepad = <value optimized out>
depth = <value optimized out>
bitsPerPixel = 1
k = 2
pScreen = <value optimized out>
#8 0x080a7f5e in InitOutput (pScreenInfo=0x8204a00, argc=1,
argv=0xbfea4b74)
at ../../../../hw/xfree86/common/xf86Init.c:850
i = 0
j = <value optimized out>
k = <value optimized out>
scr_index = 136333824
modulelist = <value optimized out>
optionlist = (pointer *) 0x8213558
layout = <value optimized out>
screenpix24 = <value optimized out>
pix24 = Pix24Use32
pix24From = X_DEFAULT
autoconfig = <value optimized out>
generation = 1
#9 0x08074426 in main (argc=1, argv=0xbfea4b74, envp=0xbfea4b7c)
at ../../dix/main.c:369
i = <value optimized out>
error = 136144064
xauthfile = <value optimized out>
alwaysCheckForInput = {0, 1}
(gdb)
--
Andrew Ruthven, Wellington, New Zealand
At home: [EMAIL PROTECTED] | This space intentionally
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