kernel-packages team mailing list archive

[Andreas Schildbach <launchpad.net@xxxxxxxxxxxxx>]

Christopher, before I take this effort I have two questions:

1) Are you sure this is a regression in the kernel itself? It could also
be a bug in another package (e.g. xserver-xorg-video-intel), right?

2) Do kernels in the 3.11.0-3.13.0 range work in combination with a
modern 15.04 distribution? Unfortunately I cannot downgrade back to
13.10/14.04 if this would be required for testing old kernels.

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https://bugs.launchpad.net/bugs/1296224

Title:
  Horrible noise via DisplayPort [regression]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This issue has been present and fixed two years ago and with Trusty
  Tahr it re-appeared:

  When logging in and my display is extended to two monitors, and also
  when the screen blanks, I get 3-5 seconds of horrible noise via
  DisplayPort audio out.

  The noise is loud enough to damage ears and loudspeakers, if volume
  has been set to a normal listening level.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
  Uname: Linux 3.13.0-18-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Sun Mar 23 10:18:08 2014
  DistUpgraded: 2014-01-03 23:25:11,434 DEBUG enabling apt cron job
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21c1]
  InstallationDate: Installed on 2011-08-05 (960 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
  MachineType: LENOVO 29123AG
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-18-generic root=UUID=b9fb2d9e-d248-4294-bd6b-9abe27dfcea4 ro quiet splash
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to trusty on 2014-01-03 (78 days ago)
  dmi.bios.date: 10/11/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6UET70WW (1.50 )
  dmi.board.name: 29123AG
  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:bvr6UET70WW(1.50):bd10/11/2012:svnLENOVO:pn29123AG:pvrThinkPadT410s:rvnLENOVO:rn29123AG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 29123AG
  dmi.product.version: ThinkPad T410s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140320.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sun Mar 23 10:09:13 2014
  xserver.configfile: default
  xserver.errors:
   N-Trig Pen stylus: Invalid type 'cursor' for this device.
   N-Trig Pen stylus: Invalid type 'touch' for this device.
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16438 
   vendor                                     LEN
  xserver.version: 2:1.15.0-1ubuntu7

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