Getting system to boot in headless mode set-up without display problems

Question

Previously I had Ubuntu 11.04 and I could boot with no monitor attached.

Now I have installed Ubuntu 12.10 with autologin and I've found that is incapable of booting correctly if the monitor isn't attached.

Is there a way to "force" Ubuntu to "remember" last monitor attached or to define a virtual one to allow a "normal" booting?

Solution

You need to do this :

go to directory :

cd /etc/X11/

cp xorg.conf xorg.bak

sudo gedit xorg.conf

Look for this section "Device" in the file, and update the file to be like this :

Section "Device"
     Identifier "Configured Device"
     Driver "vesa"
EndSection

If you dont find this section then put it at the top of the file.

Try to keep the complete file consistent.

More Details step by step guide : Running Ubuntu without monitor

Comments

[stephenmyall]

possible duplicate of How to fix "The system is running in low-graphics mode" error?

[belacqua]

@john I've tried to clarify your question for others, but let me know (or re-edit) if I've gone the wrong way.

[john]

Thanks Vikash, my driver is already vesa, and it isn't working. Here is my xorg.conf: Section "Device" Identifier "Configured Video Device" Driver "vesa" Option "NoDDCValue" "True" EndSection Section "Monitor" Identifier "Configured Monitor" HorizSync 31.5-48.5 VertRefresh 50-70 EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1024x768" EndSubSection EndSection

[Vikash Singh]

Try and change the < Identifier "Card0" > and see if it works...

[john]

Nope, and sorry about the raw xorg.conf I couldn't figure it how to format it properly.

[john]

Anyone know why this feature is broken from previous versions? Is this a bug?