Ok, at the time of writing this answer, you don't have a menu bar, and I haven't seen your xorg.conf file yet, but I believe I know enough to know what you need to do, and I believe you will be able to make changes to your xorg.conf file from recovery mode if you can't do it in normal boot mode without a menu bar.
First of all, I believe the [ 28.338] (WW) NVIDIA: GPU:0: Unable to read EDID for display device DVI-I-0 warnings are significant, but I don't think anything is "wrong", more that it might be a limitation of your monitor, or VGA cables, or your computer, or some combination. My computer, VGA, TV combination also does not detect the EDID automatically.
Wikipedia has an entry on EDID that you may find a useful reference: https://en.wikipedia.org/wiki/Extended_Display_Identification_Data
You have already created an xorg.conf file, but for completeness I will include the steps in this answer. You follow Alexander Malakhov's answer in this question:
- Alt+Ctrl+F1 to switch to console mode
- Stop the X server by stopping the display manager:
sudo service gdm stop (or sudo service lightdm stop if you have Lubuntu and/or LXDE environment).
sudo X -configure to create an xorg.conf.new filesudo mv xorg.conf.new /etc/X11/xorg.conf to rename and move the file to where the xorg.conf goessudo service gdm start or sudo service lightdm start to restart the display manager and X server. sudo start gdm and sudo start lightdm also work.
You now have the file /etc/X11/xorg.conf file. What it says now and what it should say depends on your own system. I shall share the relevant parts of my own xorg.conf file (correctly configured for my system) here and talk you through it.
But first, how to edit it? If everything is working correctly, then you can edit it by opening a terminal and typing sudo nano /etc/X11/xorg.conf. If you are having trouble editing it in normal boot mode, then you can edit it in recovery mode: start your computer, and from the grub boot menu, select "Advanced options", then the recovery mode of your most recent kernel, then select the root shell prompt. You will need to enter the command: mount -o remount,rw / to make everything read-write. Then you can edit the xorg.conf file with the command nano /etc/X11/xorg.conf (sudo is not needed in root shell prompt mode). (When you are done with root shell prompt, enter exit, then select "Resume normal boot", you might then need to reboot to see if changes have taken effect.)
This link gives helpful info on recovery mode.
Here are the relevant parts of my xorg.conf file, yours may differ. You can access the xorg.conf manual by typing man xorg.conf into a terminal, or you can find it in several places on the internet, like here. There is also an Ubuntu wiki on it here.
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
HorizSync 28.0 - 83.0
VertRefresh 56.0 - 75.0
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "SWcursor" # [<bool>]
#Option "kmsdev" # <str>
#Option "ShadowFB" # [<bool>]
Identifier "Card0"
Driver "sis"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1360x768"
EndSubSection
EndSection
I believe you would have the correct Driver in your Section "Device", yours should be something like nvidia.
Next, let's look at Section "Screen". You may, like me, have a number of subsections, in which case the only one you need to worry about is the Depth 24 subsection. Insert the line:
Modes "1680x1050"
into that subsection. Your computer was not able to determine the screen size using EDID, so we are manually telling the computer what the screen size is.
I believe this is the change you need to make to get it working. Reboot the machine and see if the resolution is fixed.
There is a chance you may need to make a further change: in the Section "Monitor" section, you can see HorizSync and VertRefresh lines in my xorg.conf. You may also need these lines in yours. However, the range you need to specify for both lines depends on your monitor. If you have the manual for your monitor, look in the "specifications" towards the back of the manual. If you do not have the manual, ASUS appear to provide them on their website, but I do not know the model name/number of your monitor. You may be able to get the model name/number from a sticker on the back of the monitor.
Somewhere in the Specifications section of the manual is a tabulated list of resolutions, and corresponding horizontal and vertical values. You want the HorizSync range to include all horizontal values for every resolution that you might use: find the lowest value in the list and make that the lower limit, and make the upper limit the same as the highest value in the list. Likewise, with the VertRefresh, use the lowest and highest values in the Vertical column (an ASUS manual I have picked at random just calls this "Refresh Rate"). If you add the HorizSync and VertRefresh lines, then save and reboot to see if this fixes the problem.
Please do share by comment, at which point, if any, the resolution issue is fixed. If it is still not fixed, we may need to look at your /etc/X11/xorg.conf and /var/log/Xorg.0.log files again.
