I think I have the same bug with Ubuntu 16.10. 16.04 was fine. Additionally, setting a new wallpaper is a bit slow. The new wallpaper appears after a delay of 2 seconds without any special effect (no fading in/out).
Graphics card : Intel HD graphics. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1634220 Title: Wallpaper does not resize correctly when adding external display Status in xorg package in Ubuntu: Confirmed Bug description: When I add a second (external) display to my laptop (Dell Latitude) the wallpaper/background is not resized correctly. 1. just an internal display with a resolution of 1366x768 2. adding an external display with a full HD resolution Adding the external display results in - the wallper is shown in the upper left corner of the external display (probably with the resolution of the internal display. - The rest of the screen is filled with random segments of windows that have been shown at these positions before - the internal display does not show any wallpaper (completely black) Additionally it looks like the left side panels (one for internal and one for external) are drawn over each other on the external display. See attachment Auswal_001.png Deactivating the internal display does not change anything Locking the screen shows a correctly resized wallpaper in the background. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: xorg 1:7.7+13ubuntu4 ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0 Uname: Linux 4.8.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 BootLog: /dev/sda6: clean, 1281257/10911744 files, 22096310/43622400 blocks 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 Oct 17 20:23:39 2016 DistUpgraded: Fresh install DistroCodename: yakkety DistroVariant: ubuntu DkmsStatus: virtualbox, 5.1.6, 4.8.0-21-generic, x86_64: installed virtualbox, 5.1.6, 4.8.0-22-generic, x86_64: installed EcryptfsInUse: Yes ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics Controller [1028:04a9] InstallationDate: Installed on 2013-11-10 (1072 days ago) InstallationMedia: elementary OS 0.2 "Luna" - Stable amd64 (20130810) MachineType: Dell Inc. Latitude E6220 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-22-generic root=UUID=f1d78d25-23cf-4217-9db2-0750a8eb2b53 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/17/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0R97MN dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd05/17/2012:svnDellInc.:pnLatitudeE6220:pvr01:rvnDellInc.:rn0R97MN:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6220 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.13.0+16.10.20160818.2-0ubuntu2 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.70-1 version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.3-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.3-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160706-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1634220/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
