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[Sergiu Sincan <sergiu.sincan@xxxxxxxxx>]

** Package changed: xserver-xorg-video-intel-lts-vivid (Ubuntu) =>
linux-lts-vivid (Ubuntu)

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https://bugs.launchpad.net/bugs/1529020

Title:
  Braswell: CPU pipe C FIFO underrun when mouse pointer changes display

Status in linux-lts-vivid package in Ubuntu:
  New

Bug description:
  Machine is a HP 250 G4 notebook with Celeron N3050, with BIOS F.1A
  Rev.A (latest).

  When I add a external display (VGA, 1920x1080@60Hz), sometimes when I cross over to it with the mouse cursor, it flickers (turns off for about 1-2 seconds), and I get:
  [  692.452293] [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe C FIFO underrun.
  It will do this for 2-3 times, and then it will turn off completely (external display has no VGA signal).

  Also reproduces with Kubuntu 15.10 (in Live mode).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xserver-xorg-video-intel-lts-vivid 2:2.99.917-1~exp1ubuntu2.2~trusty1
  ProcVersionSignature: Ubuntu 3.19.0-42.48~14.04.1-generic 3.19.8-ckt10
  Uname: Linux 3.19.0-42-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu Dec 24 10:03:17 2015
  InstallationDate: Installed on 2015-12-23 (0 days ago)
  InstallationMedia: Kubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: xserver-xorg-video-intel-lts-vivid
  UpgradeStatus: No upgrade log present (probably fresh install)

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