You added the ppa from https://edge.launchpad.net/~xorg-edgers/+archive/ppa and that was your Xorg.0.log? That log isn't using the updated packages from the xorg-edgers PPA - the line
(II) [drm] nouveau interface version: 0.0.15
indicates that it's using the main archive's version of the packages.
You added the ppa from https:/ /edge.launchpad .net/~xorg- edgers/ +archive/ ppa and that was your Xorg.0.log? That log isn't using the updated packages from the xorg-edgers PPA - the line
(II) [drm] nouveau interface version: 0.0.15
indicates that it's using the main archive's version of the packages.
What did you do to enable the xorg-edgers PPA?