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[Bug 956046] Re: intel driver fails to use dual-link LVDS if lid is down at boot

 

Ryan Lortie, 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>

If reproducible, could you also 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:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc5

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:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

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
understanding.

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

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https://bugs.launchpad.net/bugs/956046

Title:
  intel driver fails to use dual-link LVDS if lid is down at boot

Status in The Linux Kernel:
  Invalid
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  This email more or less describes the exact situation I experience on
  my T420 with Ubuntu:

  http://lists.freedesktop.org/archives/intel-gfx/2012-March/015473.html

  I have a dock and external monitors.  If I boot the laptop with the
  lid down then when I open the lid, the display is corrupted.

  The thread has a patch in it here:
  http://lists.freedesktop.org/archives/intel-gfx/2012-March/015486.html

  I'm going to test that out and report back.

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