New install will not boot - Fails at starting graphical interface

edit

I already use F26 Gnome and F26 KDE in separate partitions - and I had no problems installing them. I am now trying to install F27 Gnome in another partition but this new install fails just before the login screen. I can boot into run level 3 but cannot get it into a graphics mode.

The computer is a 2012 macbook pro with nvidia. I have already added nomodeset to the grub linux line.

Given the last line of the log ouput:

 Screen 0 deleted because of no matching config section

it looks like I may need to do something with xorg.conf but not sure how to go about this.

I have included the output from the Xorg.0.log file below:

[    39.501] (--) Log file renamed from "/var/log/Xorg.pid-1031.log" to "/var/log/Xorg.0.log"
[    39.574] 
X.Org X Server 1.19.5
Release Date: 2017-10-12
[    39.574] X Protocol Version 11, Revision 0
[    39.575] Build Operating System:  4.12.9-300.fc26.x86_64 
[    39.575] Current Operating System: Linux localhost.localdomain 4.13.5-300.fc27.x86_64 #1 SMP Thu Oct 5 16:57:11 UTC 2017 x86_64
[    39.575] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.13.5-300.fc27.x86_64 root=UUID=644d44d7-13e5-46aa-9929-14fdbe23c709 ro nomodeset
[    39.575] Build Date: 12 October 2017  07:35:27PM
[    39.575] Build ID: xorg-x11-server 1.19.5-1.fc27 
[    39.575] Current version of pixman: 0.34.0
[    39.575]    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    39.575] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    39.575] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Oct 27 09:57:18 2017
[    39.651] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    39.651] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    39.718] (==) No Layout section.  Using the first Screen section.
[    39.718] (==) No screen section available. Using defaults.
[    39.718] (**) |-->Screen "Default Screen Section" (0)
[    39.718] (**) |   |-->Monitor "<default monitor>"
[    39.736] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    39.736] (==) Automatically adding devices
[    39.736] (==) Automatically enabling devices
[    39.736] (==) Automatically adding GPU devices
[    39.736] (==) Automatically binding GPU devices
[    39.736] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    39.736] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    39.736] (==) ModulePath set to "/usr/lib64/xorg/modules"
[    39.736] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    39.736] (II) Loader magic: 0x821e00
[    39.736] (II) Module ABI versions:
[    39.736]    X.Org ANSI C Emulation: 0.4
[    39.736]    X.Org Video Driver: 23.0
[    39.736]    X.Org XInput driver : 24.1
[    39.736]    X.Org Server Extension : 10.0
[    39.739] (++) using VT number 1

[    39.744] (II) systemd-logind: took control of session /org ...