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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

retalemine, did this problem not occur in a release prior to Trusty?

** Tags added: vivid

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https://bugs.launchpad.net/bugs/1437599

Title:
  Monitor is flickering at higher resolution 1366x768 but not in lower
  resolution like 1024x768

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  $dmesg | grep -i 'Graphic\|video\|VGA\|error\|fail'
  [    0.102507] DMAR: Disabling IOMMU for graphics on this chipset
  [    0.113036] vgaarb: setting as boot device: PCI:0000:00:02.0
  [    0.113036] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
  [    0.113036] vgaarb: loaded
  [    0.113036] vgaarb: bridge control possible 0000:00:02.0
  [    0.134634] pci 0000:00:02.0: Video device with shadowed ROM
  [    0.535561] fb0: VESA VGA frame buffer device
  [    0.561694] ACPI Error: Method parse/execution failed [\_SB_.PCI0.IDE1.GTM_] (Node ffff8800b8665230), AE_AML_PACKAGE_LIMIT (20131115/psparse-536)
  [    0.561700] ACPI Error: Method parse/execution failed [\_SB_.PCI0.IDE1.CHN1._GTM] (Node ffff8800b86650f0), AE_AML_PACKAGE_LIMIT (20131115/psparse-536)
  [    0.561705] ata4: ACPI get timing mode failed (AE 0x300b)
  [    2.204028] psmouse serio1: Failed to enable mouse on isa0060/serio1
  [   20.745886] video: module verification failed: signature and/or  required key missing - tainting kernel
  [   21.424428] [drm] Memory usable by graphics device = 2048M
  [   21.424434] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
  [   21.468204] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
  [   21.654572] ACPI Exception: AE_NOT_FOUND, Evaluating _DOD (20131115/video-1279)
  [   21.654575] ACPI: Video Device [GFX0] (multi-head: no  rom: yes  post: no)
  [   21.654779] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input10
  [   34.595029] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro
  [   44.670868] init: failsafe main process (690) killed by TERM signal

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8.1
  ProcVersionSignature: Ubuntu 3.13.0-46.76-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Sat Mar 28 15:06:36 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   i915-3.16-3.13, 1, 3.13.0-32-generic, x86_64: installed
   i915-3.16-3.13, 1, 3.13.0-46-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Intel Corporation Device [8086:d613]
  InstallationDate: Installed on 2015-02-22 (33 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-46-generic root=UUID=33fb99a7-bac5-4585-95ce-c8f970c62c99 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/22/2011
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: RQG4110H.86A.0017.2011.0322.1523
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: DG41RQ
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAE54511-205
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorp.:bvrRQG4110H.86A.0017.2011.0322.1523:bd03/22/2011:svn:pn:pvr:rvnIntelCorporation:rnDG41RQ:rvrAAE54511-205:cvn:ct3:cvr:
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu2intel1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu2intel1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.911-0intel1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sat Mar 28 14:51:41 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               53306 
   vendor                                     DEL
  xserver.version: 2:1.15.1-0ubuntu2.7

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