Ubuntu: Machine does not start


Initially computer was showing the error as mentioned in How to fix "The system is running in low-graphics mode" error? question. Fixing it resulted in the above error.

Please take look at last line

started GNOME display manager... and deal with any system changes..p link was shut down.....  

One more thing before all this problem I have edited xorg.conf file to use Tooya X graphic tablet as suggested on here.

I don't know if that's the reason but I thought it is important to share.


There appears to be other people having this issue as well. A bug report was also made on this. It appears to be a bug with version 3.16. A temporary fix would be to use LightDM instead, so (in a VT, eg Ctrl+Alt+F1:

sudo apt-get install lightdm  sudo dpkg-reconfigure lightdm  

Press enter to get past the "Configuring lightdm" screen, and then navigate to LightDM in the list of options and press Enter. Restart, and you should be using LightDM. This should work temporarily until the GDM bug is fixed.


Have you tryed enter tty pres ctrl + alt +f6, and type this in the tty:

  sudo apt-get install LXDE  

and then type this in


and then push start button left corner and the preferencs and the upper gfx settings adm and set all to default, and reboot and it might work fine this way.


I tried all the possible solutions mentioned in comment area and other answers. Unfortunately none of them work.

Solution that worked for me was format and re-install.

I had to format my laptop before re-installing. Because re-installing without format was not working. I mean computer starts normally but there were several bugs with WiFi, Bluetooth, USB, etc.


You will get more details when running gdm manually in a virtual console (Ctrl + Alt + F1):

sudo gdm  

For me, the problem was that gdm wasn't able to find /usr/bin/X, which led me to this bug. Turns out xserver-xorg was not installed somehow. The following line solves this particular problem.

sudo apt-get update && sudo apt-get install xserver-xorg  

Hope this helps.


I had the exact same issue, After messing around for 3-4 hours I finally got the ubuntu running.

Before I reboot the ubuntu I did install xubuntu by

sudo apt-get install xubuntu-desktop

and then I did

mkdir -p /var/lib/lightdm

chown -R lightdm:lightdm /var/lib/lightdm

chmod 0750 /var/lib/lightdm

So it installed xubuntu desktop but I got everything working fine.

This is how I did it.

I would suggest first try the 2nd part if that does not work then try the installing xubuntu desktop.

Hope it helps someone.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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