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Today I decided to install Ubuntu 11.10, and it did not recognize my resolution - 1440x900.

This has already happened in other versions of Ubuntu. However, in 11.10 I cannot get this resolved. Can anyone help me?

My PC:

  • Intel Corporation 82945G/GZ
    • Proview 19'' 1440x900
  • Ubuntu 11.10 (oneiric)
  • Kernel Linux - 3.0.0-12-generic

I tried the instructions in this blog post.

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Please generate an /home/"username"/ that you can edit by adding a known good modeline in the applicable monitor section (if there are more than one).

To have the 1280x1024 resolution from the start on my HP vs17e monitor I included:

option "PreferredMode" "1280x1024"

(But I use Radeon driver on X600 discrete pci-e display adp, not the Intel.)

Save it under another name like /home/username/20-Proview.conf.

Press Ctrl+Alt+F1 for console 1, log in, and run:

sudo stop lightdm

Press Alt+F2 for console 2, log in, and run:

sudo cp 20-Proview.conf /usr/share/X11/xorg.conf.d/

Press Alt+F1 to return to console 1 and run:

sudo start lightdm

If there is no no error you get the greeter login.

If there is an error, return to console 2 and run:

less /var/log/Xorg.0.log

You can read this and see where the error (if any) occurred.

To undo a mistake just run:

sudo rm /usr/share/X11/xorg.conf.d/20-Proview.conf

(I apologise if I introduced typos--sometimes xorg has to be with capital X, as is the case for that log file.)

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I have a similar problem with my monitor. Have you tried the usual randr commands?

xrandr --addmode VGA-1 1440x900
xrandr --output VGA-1 --mode 1440x900 --rate 60

Of course, change the value on rate to what refresh rate you want, and VGA-1 should be changed to what the name of your monitor is. If you need to find out the name just do


and it will show you a list.

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Well, I can even change the resolution. But when I restart from a mistake and goes back to what it was before. That is, I can not set the resolution. It must be because of LightDM. Why the other method, I ran a command that changed the resolution. – Maiscedo Oct 12 '11 at 21:41
if the commands work to change the resolution just make an sh file with the commands in it, then go on the unity launcher and search for "startup applications" and add a new application and add as the command "sh /path/to/" – merlin371 Oct 12 '11 at 21:49
It can be ... but I would like to change the resolution of LightDM too. What can not be done by "startup applications". Any tips? – Maiscedo Oct 12 '11 at 21:59

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