[SOLVED] New centos7 install screen resolution problem nvidia

[trevor14smith]

I have a fresh install of centos7 on a Dell Inspiron 531 with GeForce 6150SE nforce 430 (a2) graphics card. (I know its Old!!)
installed kmod-forcedeth
installed gcc kernel-devel
did a yum update

PS: Did many installs trying to use kmod-nvidia drivers....everything broke the graphics except above

Everything is working perfectly except the screen resolution...when I go to systemtools>settings>displays it just says "unknown display" with either 1024x768 or 800x600. The monitor works perfectly on another identical machine with Fedora20, which tells me it is a Dell 19" at 1440x900

Does anyone know the fix for this display problem?
Thanks in advance for any suggestions!

[trevor14smith]

Tried to install the nvidia drivers as follows:

yum erase xorg-x11-glamor
yum install kmod-nvidia-304xx nvidia-x11-drv-304xx (also installs xorg-x11-server-Xorg)

Now boots up to the user login (with correct resolusion!) - but NO mouse and NO command line (cannot log in)

If I remove these drivers:
yum erase kmod-nvidia-304xx nvidia-x11-drv-304xx xorg-x11-server-Xorg - boots up to a black screen...

Still unresolved - any help appreciated...

[superuser197]

Did you try using proprietary drivers.

http://www.nvidia.com/object/unix.html

[TrevorH]

kmod-nvidia* are the proprietary drivers.

[trevor14smith]

More info:

Yum erase gnome-desktop3
Yum install cinnamon
Yum install lightdm

Same problem boots to the lightdm login ( perfect screen resolusion) - But again NO mouse...

[trevor14smith]

More news almost fixed...

gnome is still removed (using cinnamon)

Decided to remove and reinstall "X Window System"
yum erase lightdm
yum groupremove "X Window System"
yum groupinstall "X Window System"
x -configure
reboot

reboots to the command prompt - if I run startx as regular user then x fails to start
When I run startx as root I get a fully working cinnamon desktop with correct resolution !!! VERY promising backed up my important files at this point.
PS: sytsemctl is set to graphical.target.

Any advise on how to get the system to auto boot up to cinnamon as regular user?
Should I start a new thread?
I could do a fresh install of CentOS 7 at this point if necessary.

[trevor14smith]

After having gone round and round I decided to now install lightdm (again), since X Window was not working for me...

Bingo - Everything now works!
Running Cinnamon and lightdm

This post is solved - How do I mark it as such