After Ubuntu 14.04 is upgraded, the desktop crashes with a low configuration.

After Upgrade 14.04 with Ubuntu12.04, thesystemnisrnninginlow-graphicmode appears at startup. I have studied the configuration file I calculated for half a day when I updated the video card driver, which makes it impossible to enter the desktop mode, however, you can enter the text mode and find the solution. Ubuntu14.04 knowledge http://www.linuxidc.com/Linux/201 for downloading, installing, and configuring

After upgrading 12.04 with Ubuntu 14.04, the systemn is rnning in low-graphic mode will appear during startup.

After studying what configuration files were modified when I updated the graphics card driver for a long time, I was unable to enter the desktop mode, but I could enter the text mode and finally found a solution.

Ubuntu 14.04Download, install, and configure a http://www.linuxidc.com/Linux/2014-04/100370.htm of related knowledge.

Ubuntu 14.04: Http://www.linuxidc.com/Linux/2014-04/100352.htm

Ubuntu 14.04 text tutorial on hard drive installation in Windows 7Http://www.linuxidc.com/Linux/2014-04/100369.htm

Method 1: reinstall fgirx on the login text interface and then restart

Sudo apt-get install fglrx

Sudo reboot

Or

Sudo apt-get install -- reinstall ubuntu-desktop

Sudo reboot

If the problem persists, use Method 2:

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

Sudo chown avahi-autoipd: avahi-autoipd-R/var/lib/avahi-autoipd

Sudo chown colord: colord-R/var/lib/colord

Sudo reboot

Method 3: You can reinstall nautilus.

Sudo apt-get install nautilus

Sudo apt-get install Nautilus-Share-Message

Sudo reboot

PS: other online methods

For the latest Nvidia binary DRIVER:

Sudo add-apt-repository ppa: ubuntu-x-swat/x-updates

Sudo apt-get update

Sudo apt-get install nvidia-current-modaliases nvidia-settings

For the latest ATI/AMD binary drivers:

Sudo add-apt-repository ppa: ubuntu-x-swat/x-updates

Sudo apt-get update

Sudo apt-get install fglrx

If you have an old version on your machine, follow these commands. Nvidia and ATI/AMD graphics cards use the same command.

Sudo add-apt-repository ppa: ubuntu-x-swat/x-updates

Sudo apt-get update

Sudo apt-get upgrade

For more information about Ubuntu, see Ubuntu special page http://www.linuxidc.com/topicnews.aspx? Tid = 2

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