Troubleshooting; Console Switch Troubleshooting - HP 336045-B21 - Server Console Switch KVM User Manual

Troubleshooting

Console switch troubleshooting

Problem
The console switch is
not working properly.
The console switch
hangs after reboot.
One of the power
supply status indicator
LEDs does not appear
and the other blinks
irregularly.
The system does not
recognize the
cascaded console
switches.
Servers are still listed
although they have
been disconnected.
The console switch
serial port password
is lost.
The video displays all
green or red, or the
colors are all wrong.
The mouse does not
align.
The mouse and
keyboard lose
functionality after the
Device Reset button is
pressed while
operating a UNIX®
based platform.
When connecting a
serial interface
adapter to a server
running Red Hat
Linux, SLES, or HPUX,
the numeric keypad
keys on a PC
keyboard do not map
to VT100 emulation
Troubleshooting
1 Determine whether the console switch has power.
2 Determine if all the cables are properly connected.
Reboot the console switch again by removing the power cable and then plugging it
back in to a power source.
One of the power supplies does not have power or is defective. The LED blinking
irregularly is blinking the Morse code SOS.
Verify that all of the console switches are HP switches, and are upgraded with the
latest firmware.
Delete the offline interface adapters ("Deleting offline interface adapters" on page
41) through either the local console UI or remote OBWI.
Reset the password through the Local console UI settings (on page 42).
•
Look for breaks or bad crimps in the UTP CAT5 cable.
•
Look for bent pins in the VGA connection.
•
Be sure that the cable is not a cross-over network cable.
Verify that there is no mouse acceleration or enhanced pointed precision. The
mouse speed must be 50%.
The Device Reset button is a Microsoft® Windows® based function. To regain
mouse and keyboard functionality, restart the desktop.
Use the printenv command to show the TERM assigned under Linux. It can be
matched appropriately with other termcap entries by editing the profile or setting
the TERM equal to "ansi". For PC keyboards, ANSI is the most compatible
emulation.
-or-
Edit your /etc/inittab as s0:2345:respawn:/sbin/agetty -h ttyS0 115200, 9600
ansi
Where ttyS0 is the serial device name under Linux where the serial interface
Troubleshooting 74