Public bug reported:
As in the title the external screen attached to my laptop through
Displayport suddenly turns grey and I have to unplug/replug it in order
to get the environment to appear again.
This bug started appearing after installing the latest updates
(2015-04-14) that included linux-headers-3.13.0-49-generic:amd64.
I have in the past installed the Intel Linux Graphics drivers which
apparently are now causing some problems with 14.04 so the problem could
also be caused by that.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8.1
ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17
Uname: Linux 3.13.0-49-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.14.1-0ubuntu3.8
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: Wed Apr 15 14:17:51 2015
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GpuHangFrequency: Several times a day
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Today
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 (238 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 20AL00BYMS
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-49-generic
root=UUID=58f7be01-3efd-41f5-adbb-d0a430268da1 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/09/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: GIET79WW (2.29 )
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:bvrGIET79WW(2.29):bd01/09/2015: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 1:0.9.11.3+14.04.20150122-0ubuntu1
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: Wed Apr 15 10:59:44 2015
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 41106
vendor DEL
xserver.version: 2:1.15.1-0ubuntu2.7
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 freeze third-party-packages trusty ubuntu
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https://bugs.launchpad.net/bugs/1444442
Title:
External screen turns grey or green after some random time.
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