Natty detects a non-existant monitor

[E King]

Binary package hint: xorg

Recently upgraded from Lucid->Maverick->Natty.

I have only one monitor attached, but Natty thinks there are two. xrandr reports both LVDS1 and VGA1 as connected. LVDS1 is the entry that is incorrect. If I boot with the Maverick kernel instead of the Natty kernel, xrandr correctly reports only VGA1 attached.

The Monitor Preferences tool also shows two displays, "Dell 17"" and "Laptop". The "Laptop" is incorrect; this machine is not a laptop, and only supports a single monitor.

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 i686
Architecture: i386
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: compiz
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: Off
 modes: 1024x768
 edid-base64:
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x1024 1792x1344 1920x1200 1600x1200 1600x1200 1600x1200 1600x1200 1680x1050 1680x1050 1680x1050 1400x1050 1400x1050 1400x1050 1280x1024 1280x1024 1440x900 1440x900 1440x900 1280x960 1280x960 1360x768 1280x800 1280x800 1280x800 1152x864 1280x768 1280x768 1280x768 1024x768 1024x768 1024x768 1024x768 1024x768 1024x768 800x600 800x600 800x600 800x600 800x600 848x480 640x480 640x480 640x480 640x480 640x480 720x400 720x400 640x400 640x350
 edid-base64: AP///////wAQrBQwWjBURxcOAQNoIxp477u5o1JGmCQPSEykSwAxWUVZYVmBmalPcU+pQIGAvDQAmFEAKkAQkBMAYAgRAAAeAAAA/wBYMzc1ODQ2M0dUMFoKAAAA/ABERUxMIE05OTNzCiAgAAAA/QAyoB5gFQAKICAgICAgAHI=
Date: Sat Jun 11 09:26:44 2011
DistUpgraded: Log time: 2011-06-08 21:12:11.058416
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation N10 Family Integrated Graphics Controller [8086:a001] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Giga-byte Technology Device [1458:d000]
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. D525TUD
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=a174d625-fe43-4270-9cab-75bed4af5910 ro crashkernel=384M-2G:64M,2G-:128M
Renderer: Unknown
SourcePackage: xorg
UpgradeStatus: Upgraded to natty on 2011-06-10 (1 days ago)
dmi.bios.date: 08/25/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F3
dmi.board.name: D525TUD
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF3:bd08/25/2010:svnGigabyteTechnologyCo.,Ltd.:pnD525TUD:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnD525TUD:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: D525TUD
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
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 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[E King (eakst7)]

Attaching xrandr output after rebooting with the maverick kernel (2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 19:00:26 UTC 2011 i686 i686 i386 GNU/Linux)

Note that this output correctly shows only VGA1 connected.

[E King (eakst7)]

The Natty Live CD exhibits the same behavior.

Attaching xrandr output after booting from the Live CD.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bryce Harrington (bryce)]

Hey eakst7,

You filed this bug report against natty, but I see it's still open and
doesn't appear to have much activity recently. So, now that oneiric
is released and stable, this may be a good point for you to upgrade
and re-test if this issue is still present there.

If it's solved in the new release and you think it's worth backporting
the fix, please indicate that. Or if having the fix in the new release
is good enough, feel free to close out the bug (or let us know and we'll
close it.)

If it's not solved, leave the bug report open. I can't promise we'll
get to it (we get way more bugs filed than we can usually get to), but
your testing and feedback can help out if and when we do.

[bugbot (bugbot)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.