external monitor does not work

Bug #771344 reported by Greg Wilkins
28
This bug affects 5 people
Affects Status Importance Assigned to Milestone
xorg (Ubuntu)
New
Undecided
Unassigned

Bug Description

Binary package hint: xorg

Newly installed 11.04b2 on thinkpad x201, which used to work with 10.04 (with i915.modeset=0). If an external monitor is plugged in then frequently both screens will go blank. Sometimes the external monitor flashes solid red and sometimes there is a flashing distorted image of the screen.

This happens with both a VGA and a digital cable.

This always happens with existing accounts, but if I create a new account, I have been able to get both monitors working at full resolution (1220x1200 for the external), but if I then remove the external monitor, the laptop screen goes blank... sometimes with an X cursor, sometimes without,

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: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: None
DRM.card0.DP.1:
 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.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1280x800
 edid-base64: AP///////wAwrhFAAAAAAAATAQOAGhB46lzVk1xejiccUFQAAAABAQEBAQEBAQEBAQEBAQEB7hoAgFAgEDAQMBMABaMQAAAZ0BcAxlAgGTAwIDYABaMQAAAZAAAADwCBCjyBCjIWCQBMo0FUAAAA/gBMVE4xMjFBVDA3TDAyADg=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Wed Apr 27 01:58:27 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:215a]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
MachineType: LENOVO 3249CTO
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=ceef69b7-5e0f-40cf-8398-6110890228a8 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/26/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET45WW (1.15 )
dmi.board.name: 3249CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET45WW(1.15):bd04/26/2010:svnLENOVO:pn3249CTO:pvrThinkPadX201:rvnLENOVO:rn3249CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3249CTO
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO
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

Revision history for this message
Greg Wilkins (gregw-wiltel) wrote :
Revision history for this message
Greg Wilkins (gregw-wiltel) wrote : Re: [Bug 771344] Re: external monitor does not work
Download full text (4.6 KiB)

With a newly created account, I can get both monitors working, but it
is delicate and if you remove the external monitor or try to change
the display settings, then you frequently end up with black screen
(sometimes with movable X cursor).

Even if I save as default the setup with 2 screens working, if I log
in as the existing user, then I get blank screens.

What files in an account could affect this?

On Wed, Apr 27, 2011 at 02:10, Greg Wilkins <email address hidden> wrote:
> --
> You received this bug notification because you are a direct subscriber
> of the bug.
> https://bugs.launchpad.net/bugs/771344
>
> Title:
>  external monitor does not work
>
> Status in “xorg” package in Ubuntu:
>  New
>
> Bug description:
>  Binary package hint: xorg
>
>  Newly installed 11.04b2 on thinkpad x201, which used to work with
>  10.04 (with i915.modeset=0).  If an external monitor is plugged in
>  then frequently both screens will go blank.  Sometimes the external
>  monitor flashes solid red and sometimes there is a flashing distorted
>  image of the screen.
>
>  This happens with both a VGA and a digital cable.
>
>  This always happens with existing accounts, but if I create a new
>  account, I have been able to get both monitors working at full
>  resolution (1220x1200 for the external), but if I then remove the
>  external monitor, the laptop screen goes blank... sometimes with an X
>  cursor, sometimes without,
>
>  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: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
>  CompositorRunning: None
>  DRM.card0.DP.1:
>   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.LVDS.1:
>   status: connected
>   enabled: enabled
>   dpms: On
>   modes: 1280x800 1280x800
>   edid-base64: AP///////wAwrhFAAAAAAAATAQOAGhB46lzVk1xejiccUFQAAAABAQEBAQEBAQEBAQEBAQEB7hoAgFAgEDAQMBMABaMQAAAZ0BcAxlAgGTAwIDYABaMQAAAZAAAADwCBCjyBCjIWCQBMo0FUAAAA/gBMVE4xMjFBVDA3TDAyADg=
>  DRM.card0.VGA.1:
>   status: disconnected
>   enabled: disabled
>   dpms: Off
>   modes:
>   edid-base64:
>  Date: Wed Apr 27 01:58:27 2011
>  DistUpgraded: Fresh install
>  DistroCodename: natty
>  DistroVariant: ubuntu
>  GraphicsCard:
>   Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
>     Subsystem: Lenovo Device [17aa:215a]
>  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
>  MachineType: LENOVO 3249CTO
>  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=ceef69b7-5e0f-40cf-8398-6110890228a8 ro quiet splash vt.handoff=7
>  ...

Read more...

Revision history for this message
Sebastián García Rojas (sebagr) wrote :

+1 subscribing

Happening to me too in an Asus U35JC-A1, external monitor Samsung T220. I have two video cards:

Intel Corporation Core Processor Integrated Graphics Controller (rev 18)
nVidia Corporation GT218 [GeForce 310M] (rev ff)

but the nVidia is currently disabled

Worth noting that I upgraded from 10.10 and I'm using the very same user I had before - didn't try with a new one.

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