Red Hat ENTERPRISE LINUX AS 2.1 - Instalační příručka stáhnout pdf (Strana 56)

48 Appendix D. Troubleshooting Your Installation of Red Hat Enterprise Linux

D.3.2. 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.

If you cannot remember your user account password, you must become root. To become root, type su

- and enter your root password when prompted. Then, type passwd <username>. This allows you

to enter a new password for the speciﬁed user account.

If the graphical login screen does not appear, check your hardware for compatibility issues. The Hard-

ware Compatibility List can be found at:

http://hardware.redhat.com/hcl/

D.3.3. Your Printer Does Not Work

If you are not sure how to set up your printer or are having trouble getting it to work properly, try

using the Printer Conﬁguration Tool.

Type the system-config-printer command at a shell prompt to launch the Printer Conﬁgura-

tion Tool. If you are not root, it prompts you for the root password to continue.

D.3.4. Apache-based httpd service/Sendmail Hangs During Startup

If you are having trouble with the Apache-based httpd service or Sendmail hanging at startup, make

sure the following line is in the /etc/hosts ﬁle:

127.0.0.1 localhost.localdomain localhost

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Red Hat ENTERPRISE LINUX AS 2.1 - Instalační příručka Strana 56