HP Linux Server Management Software User Manual
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append="console=ttyS0"
- The format of the console parameter is as follows:
console=ttyS<n>[,<s><p><b>]
<n> = Serial line
Note: for HP systems, ttyS0 is the *ONLY* valid line
for a serial console. Exactly one UART MUST be selected
in the EFI Console-In/Out tables for a serial console to work.
ttyS0 is the UART selected in this table.
<s> = Speed. Ex: 9600, 19200, 38400, 57600, 115200
(9600 is the default if no speed is specified.
115200 is the maximum for HP UARTs)
<p> = Parity. Ex: n (no parity, typical case)
<b> = Bit Encoding. Ex: 7, 8 (8 is the typical case)
For a 115200 baud console, the following syntax is
used: console=ttyS0,115200n8
Why doesn’t anything happen after I choose a menu option?
If you are using a serial console, reboot and add a parameter to identify the console to the kernel and
configure it properly. For example, console=ttyS0. See online help for more details.
I see a blinking cursor in the upper left-hand corner of my monitor when I
power on my HP Integrity server. How do I configure a VGA console?
Your system should come with a VGA display as the default. If your system is configured for a serial console
and want to revert it to VGA, proceed as follows:
1.
Login to the system.
2.
Open the elilo.conf file to edit. If you are using the Debian operating system, the file is
/etc/elilo.conf
.
a.
In the “append” line, remove console=ttyS0 parameters in any stanza in which you want to
use VGA only.
b.
Save your changes.
If using Debian, you should additionally type /usr/sbin/elilo at the prompt and press Enter.
3.
Edit /etc/securetty.
a.
Ensure you have an entry with tty1 for VGA functionality.
b.
Optional — Perform this step only if you want to remove the login prompt from the serial port.
From the list of terminals on which root is allowed to login, remove ttyS0 and save the file.
4.
Open the /etc/inittab file.
a.
Ensure you have a getty with tty1 for VGA functionality.
b.
Optional — Perform this step only if you want to remove the login prompt from the serial port.
Delete the getty that runs on the serial port in ttyS0.
5.
Optional — If you want your system to start up X instead of text mode, edit /etc/inittab and
change the init default token from “3” to “5”. Then save the file and reboot the system to return to
a VGA display.
Why does tar complain about files dated in the future?
When restoring the pre-installed image, Linux reads the time from the EFI RTC, so you should set the time
correctly using the date and time commands from the EFI shell. You can also set the time using the date
command from a Linux command prompt. The format for this command is:
date [MMDDhhmm[[CC]YY][.ss]]
.
To store this date to the RTC, use the hwclock --systohc command.
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Frequently Asked Questions and Troubleshooting Information