The GDM log screen cover only some of the log windows on the top of the screen

Asked by John Papineau

I have a computers from a member of the Ubuntu Kootenay group that when I try to log in the log sceen only cover the top of the screen . The bottom of the screen is black . after I log in and go to the main desktop , The desktop is ok and it desplay the right resolution. The computer has a Nvidia video card 9 series. How can I fix the log screen so that it displays the right resolution at the log screen.

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Solved by:
John Papineau
Solved:
Last query:
Last reply:
Revision history for this message
David Jones (dj) said :
#1

try this in terminal sudo dpkg-reconfigure gdm

   David
   in TN

Revision history for this message
John Papineau (j-lp) said :
#2

HI David I have try the command above in the terminal

I typed in the terminal

sudo dpkg-reconfigure gdm

then I pressed the enter key

after that I closed the terminal and restarted the computer

the ubuntu login windows is still not displaying the right resolution

Revision history for this message
John Papineau (j-lp) said :
#3

I have been the internet and so far I have not find a solution

Revision history for this message
Sam_ (and-sam) said :
#4

To safe any changes it needs:
sudo update-initramfs -u
and reboot.

Reference regarding plymouth.
https://answers.launchpad.net/ubuntu/+question/106718

Revision history for this message
John Papineau (j-lp) said :
#5

hi so what I must do to correct the problem with the GDM log screen that is to small is

first type sudo dpkg-reconfigure gdm then when the comand is done processing , then I type sudo

update-initramfs -u

and them reboot the computer

Revision history for this message
John Papineau (j-lp) said :
#6

The monitor is a Samsung SyncMaster T240HD wide screen

The video card is Nvidia Geforce 9600GT 512 mb 256bit DDR3

xserver info:os Linux x 86

nvidia driver: 185.18.36

pci express 16x

Revision history for this message
Sam_ (and-sam) said :
#7

Which steps did you try yet and what's the result?

Revision history for this message
John Papineau (j-lp) said :
#8

I have try the step tha David described above but the GDM screen still does not display right resolution when I go to log in .

Revision history for this message
Sam_ (and-sam) said :
#9

Ok, if this is still the case
> The desktop is ok and it desplay the right resolution

before going any deeper
it maybe helps to correct the issue with nvidia tools such as:
sudo nvidia-xconfig
gksudo nvidia-settings

## these tools should display and recognize correct resolution and write it to an xorg.conf file, which should be then somewhere located in /etc/X11

Revision history for this message
John Papineau (j-lp) said :
#10

I have found how to solve the problem

Revision history for this message
John Papineau (j-lp) said :
#11

STEP TO FIX IMPROPER SCREEN RESOLUTION IN YOUR GDM LOG IN SCREEN

Step 1. First you need to log-out and be at your log in screen

step 2. When logged out, hold down CTRL+Alt+F1 key on your keyboard this will get you to the Ubuntu command line . if you see a black screen with a prompt at the bottom of the screen ,then you completed this step. correctly

step 3. Type the following command at the command prompt . make sure that you type capital letter were they are display in the command ,because linux command are case sensitive. so type this command at the command prompt export DISPLAY=:0.0 and press the ENTER key on your keyboard

step 4. at this point you may be ask for your password and user name just type your user name and password.

step 5. after you are back to a command prompt Type the following command at the command prompt Sudo -u gdm gnome-control-center and then press the ENTER key at the keyboard

step 6. Hold down CTRL+Alt+F7 key on your keyboard this will get you back to your log in screen except that your log in screen will be replaced with the Gnome Control Center . Look for the icon that say DISPLAY . When you find the icon that say DISPLAY click on it . a windows will come up asking you to make a choice just click NO

Step 7. there you will be presented with the display control panel for the GDM log in screen . Look in the panel for a setting that say resolution . beside the word resolution you will see a box with a arrow click on the arrow with your mouse and select the same resolution that is on your main desktop in Ubuntu.

step 8. when you have selected the correct resolution, then click on the apply button. Then close the display screen then the gnome control panel . You should now be back to your log in screen .at this point restart your computer . When you computer restart you log in screen should have the correct resolution .

I hope that this will help people that were experiencing this problem

John papineau
technician
Ubuntu Kootenay Group

Revision history for this message
John Papineau (j-lp) said :
#12

this problem is solved

Revision history for this message
Sam_ (and-sam) said :
#13