Packages requiring Xorg "BackingStore" "true"

Adam Jackson ajax at
Thu Sep 12 14:41:10 UTC 2013

On Wed, 2013-09-11 at 23:27 +0200, Sandro Mani wrote:
> > Well, yes, but it ought to work regardless of the xorg.conf setting,
> > because that setting has been effectively hardwired to true for about
> > six years now.  I rewrote the backing store implementation to use
> > Composite internally, which is always available, so we just blindly
> > ignore the config setting and give you backing store if you ask for it.
> > There may be bugs, I freely admit, but it's definitely meant to work.
> > If it doesn't it's probably a bug in X and I'll fix it, so hook me up
> > with test packages and I'll take a look.
> I've uploaded an x86_64 rpm here [1], the srpm is here [2]. To reproduce 
> the problem, first download the foil gometry [3], then run xfoil from a 
> terminal, and type
> load Naca63412.dat
> and at the following "Enter airfoil name" prompt, type
> naca63412
> Upon pressing enter, the Xplot11 window should open, showing the 
> cross-section of the foil.
> The Xlib code for the plotting window is in plotlib/Xwin.c in the xfoil 
> source tarball.

Oh my, this is embarassing.  If only I'd deleted more code you'd never
have hit this.  Definitely a bug in xserver.  I'll send a patch upstream
and fix Fedora once that lands.  Thanks for the testcase!

- ajax

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