Red Hat Enterprise Linux Installation Guide 5.2 - linux.meuhobby.com

Chapter 14. Troubleshooting Installation on an IBM POWER System
id:5:initdefault:
When you are satisfied with your change, save and exit the file using the Ctrl-Q keys. A window
appears and asks if you would like to save the changes. Click Save.
The next time you log in after rebooting your system, you are presented with a graphical login
prompt.
4.3. Problems with the X Window System (GUI)
If you are having trouble getting X (the X Window System) to start, you may not have installed it
during your installation.
If you want X, you can either install the packages from the Red Hat Enterprise Linux CD-ROMs
or perform an upgrade.
If you elect to upgrade, select the X Window System packages, and choose GNOME, KDE, or
both, during the upgrade package selection process.
4.4. Problems with the X Server Crashing and Non-Root Users
If you are having trouble with the X server crashing when anyone other than root logs in, you
may have a full file system (or, a lack of available hard drive space).
To verify that this is the problem you are experiencing, run the following command:
df -h
The df command should help you diagnose which partition is full. For additional information
about df and an explanation of the options available (such as the -h option used in this
example), refer to the df man page by typing man df at a shell prompt.
A key indicator is 100% full or a percentage above 90% or 95% on a partition. The /home/ and
/tmp/ partitions can sometimes fill up quickly with user files. You can make some room on that
partition by removing old files. After you free up some disk space, try running X as the user that
was unsuccessful before.
4.5. Problems When You Try to Log In
If you did not create a user account in the Setup Agent, log in as root and use the password
you assigned to root.
If you cannot remember your root password, boot your system as linux single.
Once you have booted into single user mode and have access to the # prompt, you must type
passwd root, which allows you to enter a new password for root. At this point you can type
shutdown -r now to reboot the system with the new root password.
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