gdb + xfree86 (Cannot upgrade xfree to sarge)

From: Niels L. Ellegaard (gnalle_at_ruc.dk)
Date: 08/14/04

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    To: debian-user@lists.debian.org
Date: 14 Aug 2004 18:54:47 +0200

    Is it possible to start xfree within gdb and get a backtrace? The
    problem is that if I try try `gdb Xfree86`, and my XFree86 crashes,
    then my screen locks, and I dont get to see the backtrace.

    OK here is the long story..

    A year ago I filed a bug #204603 that I cannot upgrade XFree86 from
    Woody to Sarge. I still have this problem, and I am unable to use
    XFree86 with Sarge. When I try to start Xfree86 in Sarge I get a
    signal 11 crash with no further explanation. See Bug #204603 for
    log-files, search google for `gnalle debian XFree86` for a little more
    info (I cannot paste the links from emacs-w3 ). Last year I solved my
    problem by downgrading xserver-xfree86 to woody, and placing a line in
    my /etc/apt/preferences. This worked fine.

    Today I tried upgrading to Sarge again, and it still doesn`t work, but
    now I have the extra problem that I cannot downgrade again. The
    problem is that dkpg-reconfigure xserver-xfree86/stable requires a
    special version of discover, so I starting from a Sarge distribution
    it is no longer possible to downgrade xserver-xfree86 to woody. (I
    forgot to write down the exact eror message)

    In conclusion I am left with a system with no xserver. XFree86 doesn`t
    start in Sarge and I cannot downgrade. As a final attempt before
    reinstall I would like to start xfree86 in gdb, and see if I can
    construct a backtrace. Perhaps this can give a hint of the source of
    the problem.

    So returning to my original question. Is it possible to start XFree86
    in gdb and get a backtrace?

                            Thanks in advance

                                    Niels 

    -- 
Niels L Ellegaard  http://dirac.ruc.dk/~gnalle/
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