Bindul Bhowmik, could you please advise what version of VirtualBox you are using?
** 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/1580434 Title: kernel 4.2.0-36 causes unity to break on 15.10 Status in linux package in Ubuntu: Incomplete Bug description: I run Ubuntu desktop 15.10 in a Oracle VirtualBox VM. After updating the kernel to 4.2.0-36 Unity stopped working (after the restart). The symptoms were: - The screen would not use the entire real estate in either the full screen or the windowed mode (of the VM) - On entering login information, only the desktop background would display without dash/launcher, files on desktop or any menu or keyboard action. - If you started / restarted unity from a shell (Ctrl + Shift + F1 or from a SSH session), the desktop files and mouse/keyboard actions would work, but still no dash/launcher. The problems went away after falling back to kernel 4.2.0-35. If additional information is required, please let me know I will try my best to get that. --- ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=17be50ad-6aed-4391-b974-752a1cb15592 InstallationDate: Installed on 2015-12-10 (158 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) IwConfig: eth0 no wireless extensions. eth1 no wireless extensions. lo no wireless extensions. Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_US TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-36-generic root=/dev/mapper/vg_root-lv_root ro quiet splash ProcVersionSignature: Ubuntu 4.2.0-36.42-generic 4.2.8-ckt8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.2.0-36-generic N/A linux-backports-modules-4.2.0-36-generic N/A linux-firmware 1.149.3 RfKill: Tags: wily UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 4.2.0-36-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1580434/+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