On laptop with dual monitor the additional monitor scrolls down both diaplays when set above the built-in monitor

[alexism]

I'm running a 15.10 64 bits ubuntu
I have a nvidia GTX 965M graphic chipset with nvidia-358 drivers (had the same issue with nvidia-352)

How to reproduce:
1. Plug in additional monitor
2. In system settings, configure the additional monitor so that it is above the built-in monitor

Expected behaviour:
Two different desktop (?) should appear on each monitor and the mouse should move from one to the other when reaching the limit of each display.

Observed behaviour:
When the mouse is in the built-in (bottom) display, both screen show the same image / desktop.
When moving the mouse cursor beyond the limit of the built-in display, the image on the second (top) monitor scrolls up until it shows the second desktop.
When moving the mouse cursor back to the built-in (bottom) display, the image on the top monitor scrolls down until both monitors display the same image.

I have attached some photographs, since the bug is difficult to describe properly with words

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: unity 7.3.2+15.10.20151016-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-21.25-generic 4.2.6
Uname: Linux 4.2.0-21-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 358.16 Mon Nov 16 19:25:55 PST 2015
 GCC version: gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2)
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Fri Dec 18 11:36:59 2015
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.7, 4.2.0-21-generic, x86_64: installed
 nvidia-358, 358.16, 4.2.0-21-generic, x86_64: installed
GraphicsCard:
 Intel Corporation Device [8086:191b] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:6540]
 NVIDIA Corporation GM204M [GeForce GTX 965M] [10de:13d9] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:6540]
InstallationDate: Installed on 2015-12-18 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 5986:066d Acer, Inc
 Bus 001 Device 003: ID 8087:0a2a Intel Corp.
 Bus 001 Device 002: ID 1c7a:0603 LighTuning Technology Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Notebook P65_P67RGRERA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-21-generic root=UUID=a26c2883-c0c8-4bda-b952-34afb79d0f13 ro quiet splash
SourcePackage: unity
UdevLog: Error: [Errno 2] Aucun fichier ou dossier de ce type: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/18/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.05.05
dmi.board.asset.tag: Tag 12345
dmi.board.name: P65_P67RGRERA
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.05:bd09/18/2015:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
dmi.product.name: P65_P67RGRERA
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook
version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

[Andrea Azzarone (azzar1)]

Can you still reproduce this?

[Sven (spm-ubuntuone)]

I had a very similar problem with my installation, my monitor was on the right side, and I had 2 monitors attached to the system (in sum 3 with the builtin one): One with 1920x10?? and one with 1280x1024. As soon as I hit the border with the mouse the big one (middle monitor) on the right side (there was the little monitor) the desktop scrolled to the right side and the stuff missing on the smaller monitor was garbage.

My solution was to disable the double graphics card (NVIDIA and Intel) in the BIOS and since then I had no trouble.

I have a system with a Quadro K2100M in a DELL Precision M4800.

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]