Public bug reported:
I have a Lenovo T520 and a Samsung LED monitor running in dual-monitor
mode (not mirrored). I also use an IOGEAR 2 Port USB Cable KVM Switch
with Audio and Mic (GCS72U) to share the screen with another machine,
although it is almost always just selecting the Lenovo laptop with the
screen.
When I am using the laptop without the external monitor everything looks
great, but then when I plug the external monitor in the resolution on
the monitor is incorrect and is low resolution as well as the top panel
being cut off a little (see the attached screenshot). The resolution on
the laptop screen is correct and the dual monitor setting is correct
(external screen on the left, laptop screen on the right).
If I then load the displays applet in the Settings, the external monitor
switches to the correct resolution without me clicking on anything in
the displays applet (just loading it fixes the resolution).
I also noticed today that if I plug in the external monitor (and thus
see the incorrect resolution) and leave it without going to the displays
applet, if I leave it for around 3 - 5 mins it will automatically switch
to the correct resolution without me doing anything.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.7.0-3.9-generic 3.7.0-rc6
Uname: Linux 3.7.0-3-generic i686
.tmp.unity.support.test.0:
ApportVersion: 2.6.2-0ubuntu5
Architecture: i386
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Tue Nov 27 13:12:06 2012
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21cf]
InstallationDate: Installed on 2012-11-24 (3 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20121123)
MachineType: LENOVO 4239CTO
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.7.0-3-generic
root=UUID=5fac2c6e-90ff-4e5a-a7d2-e4f1250e3039 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/06/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8AET56WW (1.36 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4239CTO
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:bvr8AET56WW(1.36):bd12/06/2011:svnLENOVO:pn4239CTO:pvrThinkPadT520:rvnLENOVO:rn4239CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4239CTO
dmi.product.version: ThinkPad T520
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.8.4+bzr3412-0ubuntu1
version.libdrm2: libdrm2 2.4.40-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.1-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.1-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.13-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.4-0ubuntu1
xserver.bootTime: Tue Nov 27 10:44:47 2012
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.0-0ubuntu8
xserver.video_driver: intel
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug compiz-0.9 i386 raring running-unity ubuntu
** Summary changed:
- Connecting monitor shows incorrect resolution on one screen and correct
resolution on another
+ Connecting external monitor shows incorrect resolution on one screen and
correct resolution on another
** Summary changed:
- Connecting external monitor shows incorrect resolution on one screen and
correct resolution on another
+ Connecting external monitor shows incorrect resolution on external screen and
correct resolution on laptop screen
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https://bugs.launchpad.net/bugs/1083790
Title:
Connecting external monitor shows incorrect resolution on external
screen and correct resolution on laptop screen
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