Using ASDM 7.7(1)150 (asdm-771-150.bin), ASDM 771 had same condition.
IOS - asa944-2.smp-k8
Descriptions for network objects are not displaying in ASDM.. field is blank.
Name is visible.. IP address is visible.. Netmask is visible for networks..
Description is blank for all entries.. all entries have a description defined.
Hovering over object will produce the bubble and this shows description.
The best that I can think of is:
lets say you want to check whether object-group DM_INLINE_24 is being used somewhere or not then do:
show run | inc DM_INLINE_24
If it returns any ACL or nat statements, then it is being used, otherwise not.
This issue is a known bug. ASDM 7.8(2) resolves it:
ASDM doesn't display Object Descriptions