Abhishek Kumar, as per http://us.acer.com/ac/en/US/content/drivers an update to your computer's buggy and outdated BIOS is available (3810). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, 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 For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, and the information above is provided, then please mark this report Status Confirmed. Thank you for your understanding. ** Tags added: bios-outdated-3810 ** Changed in: linux (Ubuntu) Status: Confirmed =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/1461599 Title: Trying to install Ubuntu 14.04, but system rebootin again and again Status in linux package in Ubuntu: Incomplete Bug description: Today when I tried to install ubuntu-14.04.2-desktop-i386 using a bootable USB(using Universal-USB-Installer-1.9.6.0), then after showing me initial 4 steps system started rebooting. Any further attempts in installing it resulted in the same bug. This bug is not letting me install Ubuntu 14.04 on my hardware and it is affecting a few more users too. --- ApportVersion: 2.14.1-0ubuntu3.7 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2726 F.... pulseaudio CasperVersion: 1.340 CurrentDesktop: Unity CurrentDmesg: [ 25.275952] tg3 0000:05:00.0 eth0: Flow control is off for TX and off for RX [ 25.275975] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 26.774375] init: plymouth-upstart-bridge main process ended, respawning [ 26.793819] init: plymouth-upstart-bridge main process ended, respawning [ 232.074319] perf interrupt took too long (2505 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 DistroRelease: Ubuntu 14.04 IwConfig: lo no wireless extensions. eth0 no wireless extensions. LiveMediaBuild: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release i386 (20150218.1) MachineType: Acer, inc. Aspire 4720Z Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid initrd=/casper/initrd.lz quiet splash -- BOOT_IMAGE=/casper/vmlinuz ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3 RelatedPackageVersions: linux-restricted-modules-3.16.0-30-generic N/A linux-backports-modules-3.16.0-30-generic N/A linux-firmware 1.127.11 Tags: trusty Uname: Linux 3.16.0-30-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/18/2008 dmi.bios.vendor: Acer dmi.bios.version: v1.3808 dmi.board.name: Nestos dmi.board.vendor: Acer, Inc. dmi.board.version: Not Applicable dmi.chassis.type: 1 dmi.chassis.vendor: Acer, Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAcer:bvrv1.3808:bd02/18/2008:svnAcer,inc.:pnAspire4720Z:pvrNotApplicable:rvnAcer,Inc.:rnNestos:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A: dmi.product.name: Aspire 4720Z dmi.product.version: Not Applicable dmi.sys.vendor: Acer, inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1461599/+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
