Dual Monitor Setup is Mirroring Instead of Spanning

[Stephen Rasku]

I was running Utopic and when I came in this morning my monitors wouldn't come out of power-save mode. I logged in remotely and rebooted the system. The monitors now work but they are both displaying the same content (mirroring) while they were spanning before. I have now upgraded to vivid but it hasn't resolved the issue.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Mon May 11 10:08:13 2015
DistUpgraded: 2015-05-11 09:39:26,994 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.3.26: added
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Oland [Radeon HD 8570 / R7 240 OEM] [1002:6611] (prog-if 00 [VGA controller])
   Subsystem: Dell Radeon R5 240 OEM [1028:210b]
InstallationDate: Installed on 2014-12-11 (150 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. OptiPlex 7020
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-46-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: Upgraded to vivid on 2015-05-11 (0 days ago)
dmi.bios.date: 08/23/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 08WKV3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd08/23/2014:svnDellInc.:pnOptiPlex7020:pvr01:rvnDellInc.:rn08WKV3:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 7020
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Mon May 11 09:40:25 2015
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech USB Optical Mouse MOUSE, id 8
 input Dell Dell Smart Card Reader Keyboard KEYBOARD, id 9
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.1-0ubuntu3
xserver.video_driver: radeon

[Stephen Rasku (ubuntu-srasku)]

I have installed Trusty Tahr and switched from using displayPort only to using displayPort and DVI. That seems to have resolved the issue.

[penalvch (penalvch)]

Stephen Rasku, using kernel series 3.13 with Vivid is not supported. If this is reproducible in a supported configuration, please file a new report.