Bug ID 550694: LCD display stops updating and Status LED turns/blinks Amber

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1, 11.5.4

Opened: Oct 06, 2015
Severity: 3-Major
Related Article:


The LCD display may stop updating and the Status LED may turn Amber and begin blinking on BIG-IP 2000, 4000, 5000, 7000, or 10000-series appliances.


When this condition occurs, the front-panel LCD display does not display the current BIG-IP host status, and the Status LED blinks Amber. There is no impact to BIG-IP host operations, and no disruption to traffic.


The Status LED turns Amber if the LED/LCD module stops receiving updates from the BIG-IP host, and begins blinking Amber if the LED/LCD module does not receive updates from the BIG-IP host for three minutes or longer. This condition may occur if data transfers between the BIG-IP host and the LED/LCD module over the connecting USB bus becomes stalled. Due to changes in BIG-IP v11.5.0 and later, the frequency and likelihood of this condition is greatly reduced, but may still occur under rare conditions.


This condition can be cleared by either of the following actions: 1. Press one of the buttons on the LCD display to navigate the LCD menus. 2. Issue the following command at the BIG-IP host console: /sbin/lsusb -v -d 0451:3410. Either action generates USB traffic, which triggers recovery from the USB stalled transfer condition.

Fix Information

Auto-recovery from a USB stalled-transfer condition has been implemented, which prevents the Status LED from blinking Amber on BIG-IP 2000, 4000, 5000, 7000, 10000 or 12000-series appliances.

Behavior Change