Cursor freezes with synergy software kvm

[Dean Anderson]

I'm using the synergy software KVM to share a mouse and keyboard between two machines, with my Ubuntu workstation as the client. When attempting to drag-and-drop within Qt apps, the mouse cursor will freeze for several seconds. Cursor freezes also occur intermittently as well. I have an issue report for synergy as well: https://github.com/symless/synergy-core/issues/6487

This issue seems to be a regression related to update 1.6.4-3ubuntu0.2. The current workaround is to pin all libx11 packages to the previous (0.1) versions.

Release Version: Ubuntu 18.04.3 LTS
Package Version: libx11-6:amd64 2:1.6.4-3ubuntu0.2

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libx11-6 2:1.6.4-3ubuntu0.1
ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-37-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 440.33.01 Wed Nov 13 00:00:22 UTC 2019
 GCC version: gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: KDE
Date: Thu Jan 9 09:13:29 2020
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
GraphicsCard:
 NVIDIA Corporation GP104GLM [Quadro P5200 Mobile] [10de:1bb5] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Dell GP104GLM [Quadro P5200 Mobile] [1028:1832]
InstallationDate: Installed on 2018-07-30 (527 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Precision 7730
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-37-generic root=UUID=6599bc95-d2cf-4bb0-b32d-653b78ae0fe9 ro quiet splash acpi=force vt.handoff=1
SourcePackage: libx11
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/11/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.12.1
dmi.board.name: 0MG0JR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.12.1:bd11/11/2019:svnDellInc.:pnPrecision7730:pvr:rvnDellInc.:rn0MG0JR:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 7730
dmi.product.sku: 0832
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1ubuntu1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.8-0ubuntu0~18.04.3
version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.8-0ubuntu0~18.04.3
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
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

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.