GNOME Display Manager Configuration Files
The primary GNOME display manager configuration file is /etc/gdm/gdm.conf. The first comment at the top of this file is a warning that "this file should not be updated by hand." Any configuration changes should be made to the /etc/gdm/gdm.conf-custom file. In the Gutsy Gibbon release, there was even a backup of /etc/gdm/gdm.conf in the /etc/gdm/factory-gdm.conf file. For more information on the files in the /etc/gdm directory, see Table 12-1. Yes, there are directories in this table, but remember, in Linux, a directory is just a special version of a file.
File in the /etc/gdm
Directory Description
TABLE 12-1
GNOME Display Manager Configuration Files factory-gdm.conf
|
failsafeBlacklist |
Specifies graphics card characteristics that don't work with a VESA driver |
|
failsafeDexconf |
Creates an xorg.conf.failsafe configuration file in case of a failure with the X server |
|
failsafeXinit |
Initializes the X Window System in case of a failure with the X server |
|
failsafeXServer |
Starts a failsafe X server, in case of a failure with the current X server configuration |
|
gdm.conf |
Includes the primary GNOME display manager configuration file; changes should be added to gdm.conf-custom |
|
gdm.conf-custom |
Adds custom settings to gdm.conf |
|
gdmprefetchlist |
Loads key libraries to speed GUI login performance |
|
Init/Default |
Includes keyboard and other default GUI settings |
|
locale.conf |
Adds language settings |
|
modules/* |
Incorporates mouse settings for the GUI |
|
PostLogin/Default |
Adds user-defined settings after login, before the GUI desktop is presented to the user |
|
PostSession/Default |
Adds user-defined settings after logout |
|
PreSession/Default |
Adds user-defined settings after login, after PostLogin/Default is run, before the GUI desktop is presented to the user |
|
XKeepsCrashing |
Provides messages even if the BulletProofX files don't work |
|
Configures part of the X Window System during the start process |
The BulletProofX system is designed to create a graphical screen even when there are certain serious problems with the configuration of the X server. The files associated with the BulletProofX system were first implemented for Ubuntu Linux Gutsy Gibbon. If there's a complete failure in the X Window System, the BulletProofX files start a minimal graphical screen with the displayconfig-gtk utility described in Chapter 11. These configuration files are the failsafe* files described in Table 12-1.
With the Hardy Heron release, the X Server is even more resilient. It's more difficult to create a situation where the BulletProofX system calls the displayconfig-gtk utility. The X Server now works even with certain configuration files missing, or fails completely.
Continue reading here: GNOME Display Manager Configuration File
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