My Netbook Not resuming after Hibernate

Binary package hint: hibernate

Hi,I am using Acer Aspire one 532H,i am using Ubuntu 11.04 .In my net book since from the beta 2 stage,hibernate is not working,when i click on the hibernate it hibernates,after starting again,my net book stops at the password asking screen,different colors will be displayed on the screen,and it freezes.i have to switch off the net book and again i have to start from the first..

suspend works fine for me.The problem is with Hibernate option only.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: hibernate (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Wed Apr 27 09:14:15 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, user)
 LANG=en_IN.UTF-8
 SHELL=/bin/bash
SourcePackage: hibernate
UpgradeStatus: Upgraded to natty on 2011-04-13 (13 days ago)