X11 hangs on exit?

[John Hein]

Alexander Sack wrote at 12:19 -0500 on Mar  8, 2011:
 > On Mon, Mar 7, 2011 at 11:57 AM, Alexander Sack <pisymbol at gmail.com> wrote:
 > > Hello:
 > >
 > > I have a fairly new machine that I have installed both
 > > 7.2-amd64-RELEASE and well as 7.4-amd64-RELEASE.  I have used the "nv"
 > > driver as well as the "vesa" driver.  In both cases, Xorg comes up and
 > > everything appears to be working except when I exit my session, it
 > > just hangs (I stil see my xterm under xsm and I can still type on the
 > > xterm).
 > >
 > > There are NO error messages in Xorg.0.log (bummer) nor anything in
 > > /var/log/messages.  I have tried to disable "dri" but it still just
 > > hangs (I did this on a whim).
 > >
 > > Has anyone seen this before?
 > >
 > > A Google search shows that other folks have seen this but with no luck
 > > solving it.  I wish I had more information to give.  The xorg file I
 > > am using is from a simple Xorg -configure operation (the only change I
 > > made for xorg-7.4 on 7.2-amd6-RELEASE was to add Option
 > > "AddAutoDevices" "false" to make my mouse work, everything else is the
 > > default config).
 > >
 > 
 > In case anyone is wondering, gnome2 just works while xdm/xsm fail
 > miserably on 7.2-RELEASE.  Again, I really don't know why.

That sounds less like a hang and more like xinit just waiting
for its children to exit.  If you exit your xterm, does X
then close normally?  There may be other children that xinit
is waiting for - try pstree to see.