HP Lights-Out 100i (LO100i) “Invalid username / password” when trying to connect to KVM

Monday, October 28th, 2013

If you’re trying to connect to the Virtual KVM (console) on a HP Lights-Out 100i (LO100i) using the Remote Console Client Java applet, you might be getting an error in the order of

Username / Password invalid

Or:

com.serverengines.r.rdr.EndOfStream: EndOfStream

This is a known problem with firmware version 4.24 (or Earlier):

The Virtual Keyboard/Video/Mouse (KVM )will not be accessible
on HP ProLiant 100-series servers with Lights-Out 100 Base 
Management Card Firmware Version 4.24 (or earlier), if the server
has been running without interruption for 248 days (or more). When
this occurs, when attempting to access Virtual KVM/Media as shown
below, the browser will generate the following message[...]

As a solution, HP recommends:

As a workaround, shut down the server and unplug the power cable.
After a few seconds, reconnect the power cable and restart the server.

I’ve found that it isn’t required to actually unplug the powercable. For me, remotely cold-restarting the iLoM card got rid of the problem. You can remotely cold-start the iLoM with ipmitool:

$ ipmitool -H <ILOM_IP> -U <USERNAME> mc
Password:
MC Commands:
  reset <warm|cold>
  guid
  info
  watchdog <get|reset|off>
  selftest
$ ipmitool -H <ILOM_IP> -U <USERNAME> mc reset cold
Password: 
Sent cold reset command to MC

Now we wait until the iLoM comes back up and we can succefully connect to the console via the KVM Java applet.