Would it be possible for you to test the latest upstream kernel to see if any or all of these three issues are fixed in mainline already:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-rc4-vivid/ ** Tags added: kernel-da-key ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1410921 Title: no sound devices, bad video resolution on laptop screen, no external monitors detected Status in linux package in Ubuntu: Confirmed Bug description: sorry for the meta-bug here, but just upgraded from linux-image-3.18.0-8-generic: /boot/vmlinuz-3.18.0-8-generic to linux-image-3.18.0-9-generic: /boot/vmlinuz-3.18.0-9-generic and now: a.) I don't seem to have an audio device ('settings -> sound' shows only 'Dummy Output') b.) my LCD screen is in 1280x800 resolution rather than the 1364x768 that i'd expect. c.) external monitor is not detected. xrandr shows: $ xrandr xrandr: Failed to get size of gamma for output default Screen 0: minimum 1280 x 800, current 1280 x 800, maximum 1280 x 800 default connected primary 1280x800+0+0 0mm x 0mm 1280x800 76.0* ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.18.0-9-generic 3.18.0-9.10 ProcVersionSignature: Ubuntu 3.18.0-9.10-generic 3.18.2 Uname: Linux 3.18.0-9-generic x86_64 ApportVersion: 2.15.1-0ubuntu2 Architecture: amd64 CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. CurrentDesktop: Unity Date: Wed Jan 14 13:43:02 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2015-01-02 (12 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150101) IwConfig: eth0 no wireless extensions. lo no wireless extensions. lxcbr0 no wireless extensions. MachineType: LENOVO 7417CTO ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.18.0-9-generic root=UUID=715c6da7-c111-4842-868b-7778623ead7c ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.18.0-9-generic N/A linux-backports-modules-3.18.0-9-generic N/A linux-firmware 1.140 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/17/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 7UET94WW (3.24 ) dmi.board.name: 7417CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr7UET94WW(3.24):bd10/17/2012:svnLENOVO:pn7417CTO:pvrThinkPadT400:rvnLENOVO:rn7417CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 7417CTO dmi.product.version: ThinkPad T400 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1410921/+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
