Plugging in or unplugging power on some Dell Latitude notebooks with SLED10 SP1 64-bit causes hard hang

This document (3820689) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Desktop 10 Service Pack 1

Situation

Plugging in or unplugging the power connector on some Dell Latitude Laptops with SLED10 Service Pack 1 causes the system to hard hang. The same happens, when pressing Fn-DownArrow or UpArrow to decrease or increase screen brightness. The issue arises with the x86-64 version of SLED only, they do not occur with the 32-bit version.

The following Dell Latitude notebooks (among others) are affected:

D430
D620
D630
D810
D820
D830

Resolution

The issue can be resolved by using the boot following boot parameter: nmi_watchdog=0.

Additional Information

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.