multi-monitor regression

[James Troup]

I woke up this morning to find multi-monitor support had broken. However I configure the displays (e.g. mirroring), only one screen will be on at a time. If I downgrade unity from 7.1.2+13.10.20131014.1-0ubuntu1 to 7.1.1+13.10.20131004-0ubuntu1 the problem goes away and multi-monitor configs (where more than one display at a time is active) work again. 2 of my colleagues can reproduce this behaviour; one with Noveau and 2 (myself included) with Intel.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity 7.1.1+13.10.20131004-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Tue Oct 15 14:28:38 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-10-20 (725 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: Upgraded to saucy on 2013-09-19 (25 days ago)

[Launchpad Janitor (janitor)]

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

[Adam Conrad (adconrad)]

Have you tried with the interim version (7.1.2+13.10.20131011-0ubuntu1)?

[James Troup (elmo)]

I've just tried; multi-monitor works as expected with 7.1.2+13.10.20131011-0ubuntu1.

[James Troup (elmo)]

But it also works now with 7.1.2+13.10.20131014.1-0ubuntu1. So it's possible a reboot/session restart is sufficient to fix this?

[Nick Moffitt (nick-moffitt)]

Session restart worked, as worked through in #ubuntu-unity. I guess the result was that we began to think that it was upower's fault somehow.