External screen on mini-DisplayPort no longer detected
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Unity |
Confirmed
|
Undecided
|
Unassigned | ||
unity (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
My laptop has a mini-DisplayPort and an HDMI port to which I can connect external monitors. When I plug it in into the HDMI port, it is properly recognised but when I plug it into the mini-DisplayPort, Unity fails to recognise the display. This used to work in 12.10.
Steps to reproduce:
1. Plug in the external display to the HDMI port via an HDMI adapter: the Unity display extends to the second monitor
2. Plug the same display to the mini-DisplayPort adapter: the screen stay blank
3. Open System Settings -> Displays: the external monitor is no detected.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.
ProcVersionSign
Uname: Linux 3.8.0-18-generic x86_64
.tmp.unity.
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
Date: Thu Apr 18 14:37:20 2013
DistUpgraded: 2013-03-24 16:04:44,678 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.2.10: added
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21e8]
InstallationDate: Installed on 2013-03-24 (24 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 12942NG
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: unity
UpgradeStatus: Upgraded to raring on 2013-03-24 (24 days ago)
dmi.bios.date: 06/20/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8MET22WW (1.22 )
dmi.board.
dmi.board.name: 12942NG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 12942NG
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Thu Apr 18 13:53:57 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.
tags: |
added: regression-release removed: regression-proposed |
tags: | removed: regression-release |
Changed in unity: | |
status: | New → Confirmed |
tags: | added: multimonitor |
Status changed to 'Confirmed' because the bug affects multiple users.