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[Bug 777020] [NEW] Disabling LCD disables the HDMI monitor too

 

Public bug reported:

Binary package hint: xserver-xorg-video-intel

The laptop Dell Studio 1569
(http://www.linlap.com/wiki/dell+studio+1569) has "VGA compatible
controller: Intel Corporation Core Processor Integrated Graphics
Controller (rev 12)" VGA card. If I use both LCD and external HDMI-
connected monitor (in panorama mode) - both LCD and the HDMI screen work
properly.

If I disable the LCD (Administration->Monitors->Select LCD->Select
"Off"->press Apply), then *both* LCD and HDMI monitor become black! VNC
session to the laptop from a different machine shows everything as if
the LCD was disabled and the HDMI became my primary desktop.

The feature worked in maverick and stopped working in natty.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.DP.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI.A.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768
 edid-base64: AP///////wAGr+wxAAAAAAETAQOQIhN4CmsqnUxChBwNSEwAAAABAQEBAQEBAQEBAQEBAQEBkBpWPFAAGjAwIDYAWMEQAAAakBpWPFAAGjAwIDYAWMEQAAAaAAAA/gBYNzc2V4BCMTU2WFczAAAAAAAAAAAAAAAAAAEBCiAgAKk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
Date: Wed May  4 13:53:38 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 12) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0417]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Dell Inc. Studio 1569
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=843539c5-d7ab-425d-9e0b-0028c59352b0 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/09/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 0R225F
dmi.board.vendor: Dell Inc.
dmi.board.version: A04
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A04
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd02/09/2010:svnDellInc.:pnStudio1569:pvrA04:rvnDellInc.:rn0R225F:rvrA04:cvnDellInc.:ct8:cvrA04:
dmi.product.name: Studio 1569
dmi.product.version: A04
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty ubuntu

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https://bugs.launchpad.net/bugs/777020

Title:
  Disabling LCD disables the HDMI monitor too


Follow ups

References