ubuntu-x-swat team mailing list archive

[Bryce Harrington <738526@xxxxxxxxxxxxxxxxxx>]

Ashely, if you're interested in debugging this particular issue further,
here are some actions that could be taken:

1. Reproduce the issue and using gdb with a break set on
doListFontsWithInfo and 'print c ' after the segfault to see what the
contents of that structure is.  This is to see if like in bug #683016
the c->num_fpes value is undefined.

2. Add a check in doListFontsWithInfo() to bail out early if c->fpe_list
is NULL.  I don't think that would be a proper fix, just paper over the
issue, but it might be a good workaround for natty if it works.  However
if it does work it may simply move the bad behavior to somewhere else...

3.  Test the current git version of xfs.  There's been a couple changes
to how font paths are done in xfs to match what xserver expects; perhaps
that better avoids this situation.  If you can't reproduce the crash
when using this newer xfs, perhaps we simply need to update to newer xfs
(or at least backport the font path patches).

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => Medium

** Changed in: xorg-server (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/738526

Title:
  Launching a Qt app crashes X with NVIDIA card even after fix for
  650539