kernel-packages team mailing list archive

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

Stephen Thirwall, 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: latest-bios-0350

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

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https://bugs.launchpad.net/bugs/1507994

Title:
  Broadwell vaapi video decode broken by i915_bpo migration

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Since upgrading from linux-image-3.19.0-28-generic to linux-
  image-3.19.0-30-generic, vaapi-accelerated video playback on Kodi 15.2
  (and 15.1) is now all black.

  On-screen display items (eg. elapsed time) and audio still work, but
  the decoded video content is now all black. Disabling vaapi
  acceleration in the Kodi options restores the video playback.

  I have bisected the problem to this commit:
  http://kernel.ubuntu.com/git/ubuntu/ubuntu-
  vivid.git/commit/?id=059c4a45e7a0233ab06b16f591a7877d11f6d79c

  The problem still happens in Ubuntu-3.19.0-31.36, as well as
  Ubuntu-4.0.0-1.2 and Ubuntu-4.2.0-16.19 from the ubuntu-wily repo.

  It appears that the above commit flicks the switch on many changes,
  and doesn't really shed too much light on what the actual problem
  might be.

  I've tried moving that commit earlier into the history in the hope
  that I might be able to find a 'good' point to bisect from, but had no
  luck. The furthest I was able to push it back was
  http://kernel.ubuntu.com/git/ubuntu/ubuntu-
  vivid.git/commit/?id=59b6d9aaa4c379d84930598183cb4911a2713ff4, but the
  problem remained.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-30-generic 3.19.0-30.34
  ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  sdt        1916 F.... kodi.bin
  Date: Tue Oct 20 21:39:48 2015
  InstallationDate: Installed on 2015-05-03 (170 days ago)
  InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 (20141022.2)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic.efi.signed root=UUID=fb2f2c21-efe7-405c-b354-4a462517f241 ro
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.143.3
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-05-03 (170 days ago)
  dmi.bios.date: 08/12/2015
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: RYBDWi35.86A.0350.2015.0812.1722
  dmi.board.name: NUC5i3RYB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: H41000-502
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorporation:bvrRYBDWi35.86A.0350.2015.0812.1722:bd08/12/2015:svn:pn:pvr:rvnIntelCorporation:rnNUC5i3RYB:rvrH41000-502:cvn:ct3:cvr:

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