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[Bug 1241871] Re: 13.10 kernels (3.11.x) Fail to light up certain intel backlights


Dave Gilbert, I'm sorry what is this bug report about? I've read the Bug
Description, which is written as an unhelpful "catch all". Has it
mutated into something different now?

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

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  13.10 kernels (3.11.x) Fail to light up certain intel backlights

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

Bug description:
  Bug has been ongoing since 3.10-rc6

  Certain UEFI laptops incorrectly report their BPP on their display,
  causing kernel modesetting to fail

  Full details see:

  Developers have refused to quirk the regression, causing no display on
  a a large number of systems.

  Upgraded installations will boot with no display, and the installer will have no display.
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  DistroRelease: Ubuntu 13.10
  MarkForUpload: True
  Package: linux (not installed)
  Tags:  saucy
  Uname: Linux 3.12.0-rc5-custom x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: Upgraded to saucy on 2013-10-17 (3 days ago)
  UserGroups: adm audio backup bluetooth bumblebee cdrom dip fuse lp lpadmin netdev plugdev sambashare scanner sudo vboxusers video

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