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Knowledge Article: ID B50020601: Node %s communication is offline.

Description

Not reading device on system management (I2C) bus %s. Node %s communication is offline.

Causes

Not reading device on system management (I2C) bus %s. Node %s communication is offline.

Implications

Not reading device on system management (I2C) bus %s. Node %s communication is offline.

Resolutions

Complete the following steps until the problem is solved:

  1. Attempt a service hard reset of the node.
  2. If more than one node is having this problem, reset a single CMM or fail over the CMM to the standby CMM in a dual CMM system.
  3. Attempt a service-level virtual reseat of the node. Warning this will cause a power cycle of the node.
  4. Replace the system board on the node.

Additional information

To find additional troubleshooting help, visit the "IBM Support & downloads" Web site. At "IBM Support Portal: Quick start" page, select Browse for "Choose your products", select your Chassis from PureFlex System under the Hardware list, and "Troubleshoot" for "Choose your page", then select "Continue" for "See your results". To narrow the results, search with keywords that are related to this article, such as "fail", "Chassis", etc. in the "Search support" field at the right panel.

To download the latest firmware or drivers, visit the "Fix Central" Web site, select "PureSystems" for "Product Group" (from the pull-down lists), select your product for "Product" (from the pull-down lists), select your product machine type for "Product" (from the pull-down lists), and select your operating system for "Operating system" (from the pull-down lists). You can refine the search by selecting the category of the download of your interest from the "Refine results" list.