kernel-packages team mailing list archive

[mjh <moonbug1970@xxxxxxxxx>]

Sure there is something more proactive that can be done than mere testing of new kernels and BIOSes?
It should be possible to isolate the cause of the problem by comparing the diffs between  4.2.0-040200 and 4.2.0-35-generic, as I mentioned above.

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https://bugs.launchpad.net/bugs/1580311

Title:
  Laptop panel output only if external display connected

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  Since updating to 16.04 with kernel vmlinuz-4.4.0-22-generic my laptop
  no longer completes the boot sequence under a normal boot scenario -
  the "loading initrd..." message is displayed, then, when the VGA
  modesetting usually kicks the display into a higher resolution, the
  screen blanks and the startup apparently halts. This is a regression
  from 4.2 series kernels. I can successfully bring up the system if I
  revert to 4.2.0-35, and also if I boot  4.4 with the failsafe setting
  (but then X is painfully slow, as its using software)

  Matt

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Tue May 10 20:29:56 2016
  DistUpgraded: 2016-05-04 00:10:55,503 DEBUG icon theme changed, re-reading
  DistroCodename: xenial
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 5.0.18, 4.2.0-35-generic, x86_64: installed
   virtualbox, 5.0.18, 4.4.0-21-generic, x86_64: installed
   virtualbox, 5.0.18, 4.4.0-22-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GpuHangFrequency: Continuously
  GpuHangReproducibility: Yes, I can easily reproduce it
  GpuHangStarted: Immediately after installing this version of Ubuntu
  GraphicsCard:
   Intel Corporation Device [8086:22b1] (rev 21) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:06ac]
  InstallationDate: Installed on 2015-05-12 (364 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. Inspiron 15-3552
  PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log'
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic.efi.signed root=/dev/mapper/ubuntu--15--vg-root ro plymouth:debug i8042.nopnp=1 vesafb.invalid=1 drm.debug=0xe
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: Upgraded to xenial on 2016-05-03 (6 days ago)
  dmi.bios.date: 11/17/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 4.0.3
  dmi.board.name: 0CP33T
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvr4.0.3:bd11/17/2015:svnDellInc.:pnInspiron15-3552:pvr4.0.3:rvnDellInc.:rn0CP33T:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 15-3552
  dmi.product.version: 4.0.3
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
  xserver.bootTime: Tue May 10 12:26:45 2016
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                5578 
   vendor                                     CMN
  xserver.version: 2:1.18.3-1ubuntu2

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