kernel-packages team mailing list archive

[Theodore Vasiloudis <theodoros.vasiloudis@xxxxxxxxx>]

Hello, a recent Ubuntu update has probably resolved this issue, as now
all the resolutions supported by the monitor are reported normally and I
no longer need to run my xrandr script at startup. The telling sign was
that my login screen started appearing in the expected 1440 resolution,
although the image itself is distorted.

I could open an issue for the distorted login screen but it seems like a
minor issue.

I'll re-open this if I run into any problems in  the future.

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

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https://bugs.launchpad.net/bugs/1363017

Title:
  Resolution breaks on external monitor after 3.13.0-35 update

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  I have a second monitor on DisplayPort, and its list of supported
  resolutions was limited to 800x600 and 1024x768 after the latest
  kernel update.

  I was able to restore the native resolution (1440p) for the monitor
  using xrandr.

  I'm on Ubuntu 14.04.1 and the GPU is the integrated one on a Haswell
  CPU. DisplayPort is run through a Thinkpad laptop dock.

  What I did:
  Installed the latest Ubuntu kernel update, as recommended by Software Updater

  What I expected to happen:
  Resolution of external monitor should not have been affected

  What happened instead:
  Supported modes for external monitor were removed, had to use xrarnd to restore native resolution

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Aug 29 11:44:44 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   i915-3.15-3.13, 0.01, 3.13.0-32-generic, x86_64: installed
   i915-3.15-3.13, 0.01, 3.13.0-34-generic, x86_64: installed
   i915-3.15-3.13, 0.01, 3.13.0-35-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:2214]
  InstallationDate: Installed on 2014-08-19 (9 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 20AL00BYMS
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=58f7be01-3efd-41f5-adbb-d0a430268da1 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/06/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GIET69WW (2.19 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AL00BYMS
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGIET69WW(2.19):bd02/06/2014:svnLENOVO:pn20AL00BYMS:pvrThinkPadX240:rvnLENOVO:rn20AL00BYMS:rvrSDK0E50510PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AL00BYMS
  dmi.product.version: ThinkPad X240
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.54-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.2.2-0intel1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.2.2-0intel1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  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: Fri Aug 29 11:32:03 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16512 
   vendor                                     DEL
  xserver.version: 2:1.15.1-0ubuntu2

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