Hasanuzzaman, thank you for reporting this and helping make Ubuntu better. To clarify, upstream likes to see that the latest mainline is tested, even if one knows going into it that it needs work upstream.
Hence, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com /~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, Y, and Z are numbers corresponding to the kernel version. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: bios-outdated-1.09 ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** 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/1508500 Title: Wifi not working acer laptop Status in linux package in Ubuntu: Incomplete Bug description: I installed Ubuntu 14.04 in my acer Aspire E 14 E5-473-31R5 laptop. I did not find proper solution to connect it with WiFi. If I go to "Additional Drivers" tab under "System Settings > Software & Update" I can't see any drive for WiFi. There is a option of my laptop for toggling WiFi by pressing (Fn + F3), tested by pressing this but did not work. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-66-generic 3.13.0-66.108 ProcVersionSignature: Ubuntu 3.13.0-66.108-generic 3.13.11-ckt27 Uname: Linux 3.13.0-66-generic i686 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.16 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: hasan 1651 F.... pulseaudio /dev/snd/controlC1: hasan 1651 F.... pulseaudio CurrentDesktop: Unity Date: Wed Oct 21 20:49:45 2015 HibernationDevice: RESUME=UUID=e41cbe7b-b012-48ed-b922-e5f4b8a154d3 InstallationDate: Installed on 2015-10-21 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: Acer Aspire E5-473 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-66-generic root=UUID=6a1f82ea-602c-4558-bd69-a37958dc3754 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-66-generic N/A linux-backports-modules-3.13.0-66-generic N/A linux-firmware 1.127.16 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/17/2015 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.02 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: EA40_BH dmi.board.vendor: Acer dmi.board.version: V1.02 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.02 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.02:bd04/17/2015:svnAcer:pnAspireE5-473:pvrV1.02:rvnAcer:rnEA40_BH:rvrV1.02:cvnAcer:ct10:cvrV1.02: dmi.product.name: Aspire E5-473 dmi.product.version: V1.02 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1508500/+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