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[Bug 641027] Re: Screen flickers after 2.6.32-24.42 update (drm/i915 changes)


Michael Opdenacker, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:

If the mainline kernel does not fix this bug, please add the following tags:

As well, please remove the tag:

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your

** Tags added: bios-outdated-a11

** No longer affects: linux (Ubuntu)

** Package changed: linux (Fedora) => linux (Ubuntu)

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

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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  Screen flickers after 2.6.32-24.42 update (drm/i915 changes)

Status in “linux” package in Ubuntu:

Bug description:
  The display flickers several times per minute after the 2.6.32-24.42
  kernel update. This is extremely tirying for the user.

  linux (2.6.32-24.42) lucid-proposed; urgency=low

    [ Upstream Kernel Changes ]

    * (pre-stable) drm/i915: add PANEL_UNLOCK_REGS definition
      - LP: #561802, #578673
    * (pre-stable) drm/i915: make sure eDP panel is turned on
      - LP: #578673
    * (pre-stable) drm/i915: make sure we shut off the panel in eDP configs
      - LP: #578673

  These package changes correspond to our hardware, an Intel graphics chipset.

  00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
  	Subsystem: Dell Device 0410
  	Flags: bus master, fast devsel, latency 0, IRQ 35
  	Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
  	Memory at e0000000 (64-bit, prefetchable) [size=256M]
  	I/O ports at 60b0 [size=8]
  	Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+
  	Capabilities: [d0] Power Management version 2
  	Capabilities: [a4] PCIe advanced features <?>
  	Kernel driver in use: i915
  	Kernel modules: i915

  I'll try to test with the latest mainline kernel as soon as I get

  Booting on 2.6.32-23 (still installed) instead makes the problem go



  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image-2.6.32-24-generic 2.6.32-24.42
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.32-24.42-generic
  Uname: Linux 2.6.32-24-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: i386
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 2/2
     Subdevice #0: subdevice #0
     Subdevice #1: subdevice #1
   /dev/snd/controlC0:  maria      1645 F.... xfce4-mixer-plu
                        maria      1653 F.... pulseaudio
                        maria      1691 F.... xfce4-volumed
  CRDA: Error: [Errno 2] No such file or directory
   Card hw:0 'Intel'/'HDA Intel at 0xf5460000 irq 22'
     Mixer name	: 'Intel G45 DEVIBX'
     Components	: 'HDA:111d7605,10280410,00100104 HDA:80862804,80860101,00100000'
     Controls      : 22
     Simple ctrls  : 13
  Date: Fri Sep 17 06:25:56 2010
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=4a94078b-e73f-4688-a8ab-849aef1171c9
  InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Release i386 (20100429)
  MachineType: Dell Inc. Latitude E4310
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=0174c8f4-9dd1-4825-be0d-497de72aba62 ro quiet splash
  RelatedPackageVersions: linux-firmware 1.34.1
  SourcePackage: linux
  dmi.bios.date: 05/28/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A02
  dmi.board.name: 0T6M8G
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA02:bd05/28/2010:svnDellInc.:pnLatitudeE4310:pvr0001:rvnDellInc.:rn0T6M8G:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E4310
  dmi.product.version: 0001
  dmi.sys.vendor: Dell Inc.

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