Comment 0 for bug 1349121

Samsung NP300V3A (Laptop) | Nvidia GF119M [GeForce GT 520M] Ubuntu 14.04.01 LTS

Xorg 1:7.7+1ubuntu8 | ubuntu-drivers-common 1:0.2.91.5 | xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2

Unexpected 'ghost' display appears in settings when no extra display is connected.

There is a non-existing display detected, known as "Unknown Display". The bug is all in all very similar, if not a duplicate, of bug #1296020. However, as I am using Nouveau rather than Nvidia-331 and have different hardware, I thought it better to make a new report. The bug renders GDM impossible to use while Lightdm works. When logging in to Gnome Shell, the screen goes black from time to time (upon loading the shell), this I can solve by using the laptop hardware keys for switching video output.

I tried the proprietary drivers and the fix committed to trusty-proposed due to bug #1296020 (ubuntu-drivers-common 1:0.2.91.6) with no avail. It seems that whatever solved the issue for a non-existing display for Nvidia-331 users is not causing the problem for those who are using Nouveau.

My 'xrandr -q' output
Screen 0: minimum 320 x 200, current 2390 x 768, maximum 32767 x 32767
LVDS1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 293mm x 165mm
   1366x768 60.0*+
   1360x768 59.8 60.0
   1024x768 60.0
   800x600 60.3 56.2
   640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
VGA-1-2 connected 1024x768+1366+0 0mm x 0mm
   1024x768 60.0*
   800x600 60.3 56.2
   848x480 60.0
   640x480 59.9
  1024x768 (0x43) 65.0MHz
        h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz
        v: height 768 start 771 end 777 total 806 clock 60.0Hz
  800x600 (0x44) 40.0MHz
        h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz
        v: height 600 start 601 end 605 total 628 clock 60.3Hz
  800x600 (0x45) 36.0MHz
        h: width 800 start 824 end 896 total 1024 skew 0 clock 35.2KHz
        v: height 600 start 601 end 603 total 625 clock 56.2Hz

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Sun Jul 27 16:07:03 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: bbswitch, 0.7, 3.13.0-32-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd Device [144d:c0b6]
   Subsystem: Samsung Electronics Co Ltd Device [144d:c0b6]
InstallationDate: Installed on 2014-07-26 (1 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Lsusb:
 Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 003: ID 2232:1008
 Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: SAMSUNG ELECTRONICS CO., LTD. 300V3A/300V4A/300V5A/200A4B/200A5B
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=/dev/mapper/ubuntu--vg-root ro video=VGA-0:d quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/02/2011
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 04FI
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 300V3A/300V4A/300V5A/200A4B/200A5B
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04FI:bd09/02/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn300V3A/300V4A/300V5A/200A4B/200A5B:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300V3A/300V4A/300V5A/200A4B/200A5B:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 300V3A/300V4A/300V5A/200A4B/200A5B
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
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 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Jul 27 16:05:09 2014
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
 NOUVEAU(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 13141
 vendor SEC
xserver.version: 2:1.15.1-0ubuntu2