kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: latest-bios-3.24 regression-release

** Tags added: kernel-fixed-upstream kernel-fixed-upstream-3.18.2

** Changed in: linux (Ubuntu Vivid)
       Status: Confirmed => Triaged

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https://bugs.launchpad.net/bugs/1410940

Title:
  display driver / video issues in 3.18 (regression from 3.16)

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Vivid:
  Triaged

Bug description:
  After upgrading to the 3.18 kernel in vivid (currently with
  initrd.img-3.18.0-8-generic), hangouts are behaving badly for me. I
  suspect this is due to video device performance but that's just a
  guess.

  Things I've noticed:
   * hangouts have horizontal black bars / gitchy video even when just displaying my webcam (before others have joined)
   * mplayer does not show video, but just a black box
     mplayer /usr/share/example-content/Ubuntu_Free_Culture_Showcase/How\ fast.ogg

  This does not happen in 3.16.
  Specifically, I see this:
    GOOD: linux-image-3.16.0-28-generic: /boot/vmlinuz-3.16.0-28-generic
    BAD:  linux-image-3.18.0-8-generic: /boot/vmlinuz-3.18.0-8-generic
  ---
  ApportVersion: 2.15.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  smoser     2590 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-02 (12 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150101)
  MachineType: LENOVO 7417CTO
  Package: linux (not installed)
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.18.0-8-generic root=UUID=715c6da7-c111-4842-868b-7778623ead7c ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.18.0-8.9-generic 3.18.1
  RelatedPackageVersions:
   linux-restricted-modules-3.18.0-8-generic N/A
   linux-backports-modules-3.18.0-8-generic  N/A
   linux-firmware                            1.140
  Tags:  vivid
  Uname: Linux 3.18.0-8-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  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

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