Public bug reported: i'm running ubuntu 20.04 focal fossa, development branch, on a lenovo T460s (internal display 2560x1440, 200% scaling) with a dell external display (1920x1200, 100% scaling) set to "join displays". fractional scaling is enabled.
on wayland, since upgrading from ubuntu 19.10, the mouse pointer freezes for about 10-20 seconds when slowly moved between displays ("sticky edge"). the freeze behavior depends on the exact position between displays. the machine is unresponsive during these freezes. if the mouse is moved quickly, the freeze does not occur. the freeze only happens on wayland -- the problem does not occur on Xorg. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xwayland 2:1.20.7-2ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 ApportVersion: 2.20.11-0ubuntu22 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sat Apr 4 12:50:21 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:2233] InstallationDate: Installed on 2018-01-24 (800 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1) MachineType: LENOVO 20FAS05P00 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=be1e4f31-e9c9-41ac-9f95-cdbd8d5fc22a ro quiet splash vt.handoff=7 SourcePackage: xorg-server UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/25/2019 dmi.bios.vendor: LENOVO dmi.bios.version: N1CET79W (1.47 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FAS05P00 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1CET79W(1.47):bd11/25/2019:svnLENOVO:pn20FAS05P00:pvrThinkPadT460s:rvnLENOVO:rn20FAS05P00:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T460s dmi.product.name: 20FAS05P00 dmi.product.sku: LENOVO_MT_20FA_BU_Think_FM_ThinkPad T460s dmi.product.version: ThinkPad T460s dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.100-4 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.2-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 ** Affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ubuntu wayland-session -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1870823 Title: temporary mouse freeze on sticky edge between displays Status in xorg-server package in Ubuntu: New Bug description: i'm running ubuntu 20.04 focal fossa, development branch, on a lenovo T460s (internal display 2560x1440, 200% scaling) with a dell external display (1920x1200, 100% scaling) set to "join displays". fractional scaling is enabled. on wayland, since upgrading from ubuntu 19.10, the mouse pointer freezes for about 10-20 seconds when slowly moved between displays ("sticky edge"). the freeze behavior depends on the exact position between displays. the machine is unresponsive during these freezes. if the mouse is moved quickly, the freeze does not occur. the freeze only happens on wayland -- the problem does not occur on Xorg. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xwayland 2:1.20.7-2ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 ApportVersion: 2.20.11-0ubuntu22 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sat Apr 4 12:50:21 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:2233] InstallationDate: Installed on 2018-01-24 (800 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1) MachineType: LENOVO 20FAS05P00 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=be1e4f31-e9c9-41ac-9f95-cdbd8d5fc22a ro quiet splash vt.handoff=7 SourcePackage: xorg-server UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/25/2019 dmi.bios.vendor: LENOVO dmi.bios.version: N1CET79W (1.47 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FAS05P00 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1CET79W(1.47):bd11/25/2019:svnLENOVO:pn20FAS05P00:pvrThinkPadT460s:rvnLENOVO:rn20FAS05P00:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T460s dmi.product.name: 20FAS05P00 dmi.product.sku: LENOVO_MT_20FA_BU_Think_FM_ThinkPad T460s dmi.product.version: ThinkPad T460s dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.100-4 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.2-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1870823/+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