That's expected and not a bug. Once a display is removed from the current configuration (or just turned off), the shell tries to help you by moving all windows to the remaining monitor. So you don't lose them.
This is however a bug if it happens when you try to sleep the whole system. ** Package changed: xserver-xorg-video-amdgpu (Ubuntu) => compiz (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1892427 Title: [amdgpu] HDMI connected TV wakeup problems Status in compiz package in Ubuntu: Incomplete Bug description: The setup here is critical to understanding the problem. A laptop is connected via HDMI to a TV monitor. Two displays are thus available to the OS. Everything works great both in mirror display and regular display. At the end of day, I lock the user account and the display manager (DM) tells the monitors to blank (sleep?). When I touch the DM and login the laptop display livens up and looks good. However, the TV display often doesn't and I need to wake up the TV with the TV control stick. This works OK, and the second display comes back. And all the windows associated with that display return from sleep OK. *HOWEVER*, all the geometry for those windows (term windows is one example) are lost. I can see the windows in the term overview, but I cant get to them on the second display. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.15.0-112.113~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-112-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.24 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: Thu Aug 20 17:00:58 2020 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c8) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Carrizo [103c:8348] InstallationDate: Installed on 2018-04-20 (853 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) MachineType: HP HP Laptop 17-ak0xx ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-112-generic root=UUID=79cc5ed4-f740-450d-9a89-c5b4f899d10e ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/02/2017 dmi.bios.vendor: Insyde dmi.bios.version: F.06 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 8348 dmi.board.vendor: HP dmi.board.version: 42.20 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.06:bd11/02/2017:svnHP:pnHPLaptop17-ak0xx:pvrType1ProductConfigId:rvnHP:rn8348:rvr42.20:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Notebook dmi.product.name: HP Laptop 17-ak0xx dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP version.compiz: compiz 1:0.9.12.3+16.04.20171116-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.91-2~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Wed Aug 5 16:27:12 2020 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.6-1ubuntu4.1~16.04.2 xserver.video_driver: amdgpu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1892427/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
