svn commit: r433863 - in head: Mk x11-drivers x11-drivers/xf86-input-acecad x11-drivers/xf86-input-egalax x11-drivers/xf86-input-elographics x11-drivers/xf86-input-evdev x11-drivers/xf86-input-evde...

[Alexey Dokuchaev]

On Fri, Sep 22, 2017 at 01:01:16AM +0700, Alexey Dokuchaev wrote:
> On Sat, Feb 11, 2017 at 02:17:59PM +0000, Matthew Rezny wrote:
> > New Revision: 433863
> > URL: https://svnweb.freebsd.org/changeset/ports/433863
> > 
> > Log:
> >   Xorg-servers update to 1.18.4 with driver updates and revision bumps.
> 
> Just to let folks know in case they notice similar regressions: this X.org
> server update (apparently, input and video drivers do not play a role in
> here) had broken movement in vanilla Quake2 (games/quake2lnx) for me, that
> is, jumping (may it be with keyboard or mouse). [...]
> 
> Reverting r433863 (updating to r433862 really) back to xorg-server-1.17.4
> had fixed the movement for me.  I'll try to investigate more to understand
> what exactly had caused this issue.

Something very fishy is going on here: I've bisected xorg-server versions
and found out that 1.18.2 works, but 1.18.3 does not.  However, building
1.18.3 with reverted changes (not too many of them) did not fix the bug!

Eventually I got two binaries (Xorg-good and Xorg-bad) that only differ in
the lower two bytes of this:

  static int VendorRelease = (((1) * 10000000) + ((18) * 100000) + ((z) *
  1000) + 0);

where `z' is either 2 (good) or 3 (bad).  Furthermore, building the latest
`x11-servers/xorg-server' 1.18.4 with PACKAGE_VERSION='1.18.2' set in the
configure script results in "good" Xorg binary.  Any ideas/insights are,
again, most welcome as I'm not entirely sure where to move next.  (I have
forcibly rebuilt all X.org-related ports, but it did not help, and I'm not
ready to completely wipe out my $localbase just yet.)

./danfe