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I'm running Ubuntu Gnome remix 12.10 and it can't recognize my display. My HW is:

Intel i3 3225 with HD 4000 onboard

/ is on a OCZ Vertex 4 SSD

display is an old IBM Thinkvision with vga connector connected through an adapter to dvi slot.

When I start it up I get to gdm which is in low resolution, then I log in the desktop is in low resolution as well. The display can't be recognized. I succeeded in changing the resolution with xrandr in /etc/gdm/Init/Default but am not really comfortable with this workaround.

I've red something about a race condition but that was more a LightDM thing and switching to GDM should help.

Thank you for your thoughts.

share|improve this question

Consider inspecting the xorg logs, most likely /var/log/Xorg.0.log look for EE entries indicating any problem that may lead to clues to a more appropriate solution.

If nothing is found, you could create the file /etc/X11/xorg.conf.d/10-monitor.conf, or edit the equivalent sections on /etc/X11/xorg.conf, this is the old fashioned way of configuring the display.

Section "Monitor"
    Identifier             "monitor0"

Section "Device"
    Identifier             "gpu0"
    Driver                 "intel"

Section "Screen"
    Identifier             "screen0" 
    Device                 "gpu0"
    Monitor                "monitor0"
    DefaultDepth            24
    SubSection             "Display"
        Depth               24
        Modes              "1600x900" "1280x720" #Choose the resolution

You can change, add or remove the resolutions you want, even add the refresh rate like "1920x1080_60.0".

share|improve this answer
Thanks a lot Martin. I commented out the XRANDR part from /etc/gdm/Init/Default, checked the /var/log/Xorg.0.log and couldn't find any errors. – Marian Jan 31 '13 at 23:49
For some reason it didn't save my whole answer so thanks a lot again. As i wrote I chcecked the log but no errors there. I couldn't find the xorg.conf in etc/X11 neither this folder /etc/X11/xorg.conf.d. However I was able to find usr/sharte/X11/xorg.conf.d but adding the file 10-monitor.conf with sugested configuration (I changed it in accordence with my monitors parameters) didn't help. Is my install wrong? Thanks a lot again. – Marian Feb 1 '13 at 10:53
You can create the file if it isn't present, at /etc/X11/ – Martín Canaval Feb 1 '13 at 14:17

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