Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

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Chapter 6. Troubleshooting Installation on an Intel
®
or AMD System
74
root (hd0,0)
kernel ­/vmlinuz­2.6.9­5.EL ro root=/dev/hda3 mem=128M
Once you reboot, the changes made to
grub.conf
are reflected on your system.
Once you have loaded the GRUB boot screen, type
e
for edit. You are presented with a list of items in
the configuration file for the boot label you have selected.
Choose the line that starts with
kernel
and type
e
to edit this boot entry.
At the end of the
kernel
line, add
mem= xx M
where
xx
equals the amount of RAM in your system.
Press
Enter
to exit edit mode.
Once the boot loader screen has returned, type
b
to boot the system.
Itanium users must enter boot commands with
elilo
followed by the boot command.
Remember to replace
xx
with the amount of RAM in your system. Press
Enter
to boot.
6.4.7. 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
Configuration Tool
. If you are not root, it prompts you for the root password to continue.
6.4.8. Problems with Sound Configuration
If, for some reason, you do not hear sound and know that you do have a sound card installed, you can
run the
Sound Card Configuration Tool
(
system-config-soundcard
) utility.
To use the
Sound Card Configuration Tool
, choose
Main Menu
=>
System
=>
Administration
=>
Soundcard Detection
in GNOME, or
Main Menu
=>
Administration
=>
Soundcard Detection
in
KDE. A small text box pops up prompting you for your root password.
You can also type the
system-config-soundcard
command at a shell prompt to launch the
Sound
Card Configuration Tool
. If you are not root, it prompts you for the root password to continue.
If the
Sound Card Configuration Tool
does not work (if the sample does not play and you still do not
have audio sounds), it is likely that your sound card is not yet supported in Red Hat Enterprise Linux.
6.4.9. 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