kernel-packages team mailing list archive

[Anmar Oueja <anmar.oueja@xxxxxxxxxx>]

I discovered that if you have tlp installed and running, you will get
screen flicker. If you disable it, or remove it, the flicker goes away.
Seems something to do with the power management and skylake.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1552304

Title:
  screen flicker on Dell XPS 13 9350 after kernel upgrade

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I upgraded to this version of the linux kernel (Linux xps
  4.4.0-9-generic #24-Ubuntu SMP Mon Feb 29 19:33:19 UTC 2016 x86_64
  x86_64 x86_64 GNU/Linux) and the screen now flickers ramdomly. flicker
  every few seconds for a fraction of the second. Not related to
  application install or system load.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-9-generic 4.4.0-9.24
  ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3
  Uname: Linux 4.4.0-9-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  anmar      1810 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Mar  2 11:11:37 2016
  HibernationDevice: RESUME=UUID=94adb22b-7cde-416d-a17f-c3e5d40718da
  InstallationDate: Installed on 2016-03-02 (0 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160301)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 0bda:5682 Realtek Semiconductor Corp. 
   Bus 001 Device 002: ID 0a5c:6412 Broadcom Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. XPS 13 9350
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-9-generic.efi.signed root=UUID=9945d9bf-9e44-4308-a4ec-c1f92f9b330c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-9-generic N/A
   linux-backports-modules-4.4.0-9-generic  N/A
   linux-firmware                           1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/18/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.1.9
  dmi.board.name: 07TYC2
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.1.9:bd12/18/2015:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn07TYC2:rvrA01:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9350
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552304/+subscriptions