Centos ATI graphics card installation, "LCD signal out of range" solution

Centso ATI Graphics driver installation

CentOS version 32-bit 6.4 Final

ATI Graphics card version: Radeon HD 7400 Series

Before due to a long time to install the CentOS graphics card, the resolution is very low can not be adjusted, today want to completely solve this problem, find some data finally solved.

Reference 1:http://www.cnblogs.com/fsjohnhuang/p/3906340.html

1 First remove the previously installed drivers

[Tuzhuke@localhost ~]$ cd/usr/share/ati/[root@localhost ~]#  sh Amd-uninstall.sh

2 Follow the steps in reference 1 to install

1)

RPM--import http://elrepo.org/RPM-GPG-KEY-elrepo.org

2)

RPM-UVH http://www.elrepo.org/elrepo-release-6-6. El6.elrepo.noarch.  -y install Yum-plugin-fastestmirror

3)

Yum-y Install Kmod-fglrx

4) Rebooting the system

At this point if the direct restart may be because the screen resolution is too high to enter the system, black screen or flower screen, the screen display signal out of range ******

If you are not unable to enter the system, the solution is as follows, using Grup to enter single mode, refer to article 2 http://www.it165.net/os/html/201404/8068.htm:

1, restart the system.

2, press "E" to enter the detailed settings.

3. Move the cursor over the kernel.

4. Click "E" to enter the editing interface.

5, the following interface appears.

6. Enter single and press ENTER.

7. Press "B" again.

8, enter the single maintenance mode as follows. Now in this mode you can re-modify the password, after you edit the misconfigured file, restart the system.

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Then modify the xorg.conf under the/etc/x11 folder in the command line

[Root@localhost X11] # CP xorg.conf Xorg.conf.bak [Root@localhost X11] # CP xorg.conf.fglrx-0 xorg.conf

The first step is to back up the xorg.conf file, and later there is a problem recovery

Second, rename the Fglrx configuration file

Restart the computer, normal boot, video card installation success

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Modifying the xorg.conf under the/etc/x11 folder before the graphics driver is installed may prevent "signal out of range" from appearing

Centos ATI graphics card installation, "LCD signal out of range" solution