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I had got into a serious problem while solving my the system is running in low graphics mode using this link.

This guy and I have almost same Nvidia card. Mine is just bit more newer, so when I was on step #13 I completed it and rebooted my computer and my screen resolution got shrinked while my problem has not solved instead I have lost my unity and all can see is a blank screen with only my destop icon and shrunken screen in center. I get unity back when I remove the nvidia-current package

My actual problem was that when I boot Ubuntu I get a screen saying:

The system is running in low graphics mode. Your screen, graphics card and input device settings could not be detected correctly. You will need to configure these yourself.

and I was able to login after few tries.

Braiam
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hardik juneja
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4 Answers4

7

It is not related to nvidia drivers. Because by default Ubuntu uses non-nvidia drivers even though you might have nvidia GPUs. I have an nvidia GPU too.

My Ubuntu used to boot fine until something happened which caused the same issue. After reading posts, reading logs and little bit trial and error, turns out the problem is related to lightdm GUI server.

I dont know solution to the problem but there is a quick work around in 3 steps. This will save you from reinstalling Ubuntu.

  • Step 1: When the error shows up, hit Ctrl+Alt+F1. This will open the commandline interface. Login as root.

  • Step 2: Remove a particular X11 config file. This file is not really required.

    rm /etc/X11/xorg.conf.failsafe

    Somehow the existence of the above X11 configuration file causes the OS to throw that error.

  • Step 3: Restart lightdm with:

    service lightdm restart

    This will restart lightdm and voila your desktop is back!

Andrea Corbellini
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sccott
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3

You can solve this problem by following the instructions here: https://answers.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+question/218729

hardik juneja
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0

Me: Ubuntu 12.10, I had just edited my /etc/lightdm/lightdm.conf without paying too much attention, rebooted, and got this error.

So I did the CTRL+ALT+F1 and made my way to the file, opened it in vi and noticed that there was a hard return missing:

greeter-session=unity-greetergreeter-setup-script=blah blah blah

I changed that to:

greeter-session=unity-greeter
greeter-setup-script=blah blah blah

and viola! No more "low graphics mode" error. Hope that helps someone.

Eric Carvalho
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shoppe
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-2

My root partition was full. I logged in remotely from SSH, made some free space and rebooted perfectly.

kolesar
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