When using the CMDB report "All Assets-Simple", it does not show departments information in the Department column, or does picking a department from the user pick list show a list of assets for the specified department.
Defect, Etrack 2984195.
This issue will be resolved in a future version of CMDB.
The workaround is to import the attached modified "All Assets-Simple" report and use it instead, which resolves the issue. Note: Importing in the corrected version of the report will ask to overwrite the old, faulty one. Choose OK when prompted to do this.
Related Article
CMDB report "Assets by Type, Status, Department, Cost Center and Location" fails to work as expected
http://www.symantec.com/business/support/index?page=content&id=TECH199268