Lenovo ThinkSystem SR655 V3 User Manual page 228

• "Intermittent unexpected reboots" on page 218
Intermittent external device problems
Complete the following steps until the problem is solved.
1. Update the UEFI and XCC firmware to the latest versions.
2. Make sure that the correct device drivers are installed. See the manufacturer's website for
documentation.
3. For a USB device:
a. Make sure that the device is configured correctly.
Restart the server and press the key according to the on-screen instructions to display the LXPM
system setup interface. (For more information, see the "Startup" section in the LXPM documentation
compatible with your server at
.) Then, click System Settings ➙ Devices and I/O Ports ➙ USB Configuration.
page.html
b. Connect the device to another port. If using a USB hub, remove the hub and connect the device
directly to the server. Make sure that the device is configured correctly for the port.
Intermittent KVM problems
Complete the following steps until the problem is solved.
Video problems:
1. Make sure that all cables and the console breakout cable are properly connected and secure.
2. Make sure that the monitor is working properly by testing it on another server.
3. Test the console breakout cable on a working server to ensure that it is operating properly. Replace the
console breakout cable if it is defective.
Keyboard problems:
Make sure that all cables and the console breakout cable are properly connected and secure.
Mouse problems:
Make sure that all cables and the console breakout cable are properly connected and secure.
Intermittent unexpected reboots
Note: Some uncorrectable errors require that the server reboot so that it can disable a device, such as a
memory DIMM or a processor to allow the machine to boot up properly.
1. If the reset occurs during POST and the POST watchdog timer is enabled, make sure that sufficient time
is allowed in the watchdog timeout value (POST Watchdog Timer).
To check the POST watchdog time, restart the server and press the key according to the on-screen
instructions to display the LXPM system setup interface. (For more information, see the "Startup"
section in the LXPM documentation compatible with your server at
topic/lxpm_frontend/lxpm_product_page.html
2. If the reset occurs after the operating system starts, do one of the followings:
• Enter the operating system when the system operates normally and set up operating system kernel
dump process (Windows and Linux base operating systems will be using different method). Enter the
UEFI setup menus and disable the feature, or disable it with the following OneCli command.
OneCli.exe config set SystemRecovery.RebootSystemOnNMI Disable --bmc XCC_USER:XCC_PASSWORD@XCC_IPAddress
ThinkSystem SR655 V3 User Guide
218
https://sysmgt.lenovofiles.com/help/topic/lxpm_frontend/lxpm_product_
.) Then, click BMC Settings ➙ POST Watchdog Timer.
https://sysmgt.lenovofiles.com/help/