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[Shevek <1435070@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In the first two weeks of owning a Broadwell T550, I have suffered about
two dozen abrupt power-offs. This has happened:

a) While resuming from suspend.
b) While in normal operation and just moving the mouse.
c) While switching from X to console by pressing ctrl-alt-F1.

There was no kernel panic, no log files, just an abrupt power-off.

In conjunction with several other HD5500 issues, I am starting to
suspect the intel video driver, and have switched to the modesetting
driver. Setting the Intel driver to use AccelMethod: none made the
system more reliable but did not eliminate crashes.

Workaround: Put the following in /etc/X11/xorg.conf:

Section "Device"
        Identifier "intel"
        Driver "modesetting"
EndSection

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
Uname: Linux 3.19.0-9-generic x86_64
ApportVersion: 2.16.2-0ubuntu4
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Mar 22 13:23:01 2015
InstallationDate: Installed on 2015-03-05 (17 days ago)
InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

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https://bugs.launchpad.net/bugs/1435070

Title:
  Thinkpad T550: Broadwell with Intel HD5500 powers off randomly

Status in xserver-xorg-video-intel package in Ubuntu:
  New

Bug description:
  In the first two weeks of owning a Broadwell T550, I have suffered
  about two dozen abrupt power-offs. This has happened:

  a) While resuming from suspend.
  b) While in normal operation and just moving the mouse.
  c) While switching from X to console by pressing ctrl-alt-F1.

  There was no kernel panic, no log files, just an abrupt power-off.

  In conjunction with several other HD5500 issues, I am starting to
  suspect the intel video driver, and have switched to the modesetting
  driver. Setting the Intel driver to use AccelMethod: none made the
  system more reliable but did not eliminate crashes.

  Workaround: Put the following in /etc/X11/xorg.conf:

  Section "Device"
          Identifier "intel"
          Driver "modesetting"
  EndSection

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sun Mar 22 13:23:01 2015
  InstallationDate: Installed on 2015-03-05 (17 days ago)
  InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)

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