[CentOS] Updating 7.5->7.6

Tue Dec 18 14:46:01 UTC 2018
mark <m.roth at 5-cent.us>

I've got a user with a legacy NVidia card. I've got kmod-nvidia. Last time
I did an update, all I did was yum update --disableexcludes. This time, it
fails, with
Error: Package: nvidia-x11-drv-304xx-304.135-1.el7.elrepo.x86_64 (@elrepo)
           Requires: xorg-x11-server-Xorg <= 1.19.99
           Removing: xorg-x11-server-Xorg-1.19.5-5.el7.x86_64 (@base)
               xorg-x11-server-Xorg = 1.19.5-5.el7
           Updated By: xorg-x11-server-Xorg-1.20.1-5.1.el7.x86_64 (updates)
               xorg-x11-server-Xorg = 1.20.1-5.1.el7
           Available: xorg-x11-server-Xorg-1.20.1-3.el7.x86_64 (base)
               xorg-x11-server-Xorg = 1.20.1-3.el7
           Available: xorg-x11-server-Xorg-1.20.1-5.el7.x86_64 (updates)
               xorg-x11-server-Xorg = 1.20.1-5.el7

I'd appreciate any help understanding what this is telling me. It *looks*
like it wants to update
vidia-x11-drv-304xx-304.135-5.el7.elrepo.x86_64 (or maybe 135-6)
and then it wants to replace the elrepo mods with base or updates.

Is this saying there's no update for the xorg-x11-server-Xorg (I don't see
one) on elrepo? Does this mean I'll have to go back to the proprietary