Oops. Actually this issue is likely just lack of support for the GTX 1080 in the nouveau driver.
Can you please try enabling the Nvidia driver instead? It appears to be installed but not in use. ** Summary changed: - Stuttering when dragging windows around + [nouveau on GTX 1080] General Performance Is "slow" including stuttering when dragging windows around etc ** Changed in: gnome-shell (Ubuntu) Status: In Progress => Incomplete ** Package changed: gnome-shell (Ubuntu) => nvidia-graphics-drivers-390 (Ubuntu) ** Summary changed: - [nouveau on GTX 1080] General Performance Is "slow" including stuttering when dragging windows around etc + [nouveau on GTX 1080] General Performance Is "slow" including stuttering when dragging windows around etc (nvidia-390 is installed but modesetting in use) ** Summary changed: - [nouveau on GTX 1080] General Performance Is "slow" including stuttering when dragging windows around etc (nvidia-390 is installed but modesetting in use) + General Performance Is "slow" including stuttering when dragging windows around etc (nvidia-390 is installed but modesetting in use) ** Changed in: nvidia-graphics-drivers-390 (Ubuntu) Assignee: Daniel van Vugt (vanvugt) => (unassigned) ** Changed in: nvidia-graphics-drivers-390 (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1809423 Title: General Performance Is "slow" including stuttering when dragging windows around etc (nvidia-390 is installed but modesetting in use) Status in nvidia-graphics-drivers-390 package in Ubuntu: New Bug description: System information included in debug log. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: xorg 1:7.7+19ubuntu8 ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17 Uname: Linux 4.18.0-13-generic x86_64 ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Dec 21 19:43:06 2018 DistUpgraded: Fresh install DistroCodename: cosmic DistroVariant: ubuntu DkmsStatus: nvidia, 390.87, 4.18.0-13-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GP104 [GeForce GTX 1080] [10de:1b80] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd GP104 [GeForce GTX 1080] [1458:3717] InstallationDate: Installed on 2018-12-21 (0 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: System manufacturer System Product Name ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-13-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/27/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3703 dmi.board.asset.tag: Default string dmi.board.name: Z170-AR dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3703:bd12/27/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170-AR:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.95-1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.2-0ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1809423/+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