Window positions change in nonsensical ways when a secondary display is moved above the primary

[roothorick]

Most commonly, they'll be partway on the upper monitor, but mostly on the bottom. But sometimes, they'll be halfway off the screen on the bottom monitor. New windows are sometimes created in slightly odd places as well; usually, the titlebar will be on the top screen and the rest of the window on the bottom, meaning the gnome-shell bar is obscuring part of the window.

Windows that are maximized when the change is made aren't affected.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: xorg 1:7.7+16ubuntu2
ProcVersionSignature: Ubuntu 4.9.0-11.12-generic 4.9.0
Uname: Linux 4.9.0-11-generic x86_64
ApportVersion: 2.20.4-0ubuntu1
Architecture: amd64
BootLog:

CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Fri Jan 20 18:09:51 2017
DistUpgraded: 2017-01-17 21:44:12,781 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py'
DistroCodename: zesty
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1043:8534]
 Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480] [1002:67df] (rev c7) (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Radeon RX 480 [1682:9480]
InstallationDate: Installed on 2017-01-17 (3 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
MachineType: ASUS All Series
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.9.0-11-generic root=UUID=638d73c8-aa0e-423b-907c-6bbb2c237275 ro i915.modeset=0 quiet splash vt.handoff=7
Renderer: Software
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to zesty on 2017-01-18 (2 days ago)
dmi.bios.date: 08/07/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2004
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H87M-E
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2004:bd08/07/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH87M-E:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.74-1
version.libgl1-mesa-dri: libgl1-mesa-dri 13.0.3-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 13.0.3-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.8.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160706-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Mon Jan 16 20:46:55 2017
xserver.configfile: default
xserver.errors:
 open /dev/dri/card0: No such file or directory
 open /dev/dri/card0: No such file or directory
 Screen 0 deleted because of no matching config section.
 AIGLX: reverting to software rendering
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.18.4-0ubuntu0.2

[dino99 (9d9)]

That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml