Nitin Arya, as per http://www.dell.com/support/troubleshooting/us/en/19/Product/latitude-e6400 an update is available for your BIOS (A34). If you update to this, does it change anything?
If not, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Thank you for your understanding. ** Tags added: bios-outdated-a34 needs-upstream-testing regression- potential ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1067404 Title: [Dell Inc. Latitude E6400] suspend/resume failure [non-free: nvidia] Status in “linux” package in Ubuntu: Incomplete Bug description: out of battery ! ProblemType: KernelOops DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-17-generic 3.5.0-17.28 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic i686 NonfreeKernelModules: nvidia Annotation: This occured during a previous suspend and prevented it from resuming properly. ApportVersion: 2.6.1-0ubuntu3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bourne 2784 F.... pulseaudio Date: Tue Oct 16 21:05:33 2012 ExecutablePath: /usr/share/apport/apportcheckresume Failure: suspend/resume HibernationDevice: RESUME=UUID=0f1ae99b-9e9b-4c61-b629-9c0857a351e5 InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1) InterpreterPath: /usr/bin/python3.2mu MachineType: Dell Inc. Latitude E6400 ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume ProcEnviron: TERM=linux PATH=(custom, no user) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=2320b089-8a7e-498d-b08f-493eba25c3ff ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.5.0-17-generic N/A linux-backports-modules-3.5.0-17-generic N/A linux-firmware 1.95 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux Title: [Dell Inc. Latitude E6400] suspend/resume failure [non-free: nvidia] UpgradeStatus: Upgraded to quantal on 2012-10-09 (7 days ago) UserGroups: dmi.bios.date: 02/09/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A32 dmi.board.name: 0G868N dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA32:bd02/09/2012:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0G868N:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E6400 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1067404/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp