Clipboard hangs when virtual machine window is opened

[Luis Grace]

Hi all,

I have a host with Kubuntu 18.04 and VM also running Kubuntu 18.04. Clipboard constantly hanging when copying text between VM and host or within VM or within host only.

Problems are only when VM window is opened.

Same thing happens when the VM runs Windows instead of Linux.

All tested VMs were updated (and host too) and with current version of spice-vdagent that handles clipboard copy.

I don't have such problem in Debian so I'd assume there is a bug in KDE Plasma or in implementation on Ubuntu.

To reproduce the bug just install Kubuntu and virt-manager and create Kubuntu VM and copy text. Time to time clipboard hangs and you won't be able to paste.

This really makes computer UNUSABLE since it's super irritating.

Please let me know if you need more details.

Best regards,
Luis

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: plasma-desktop 4:5.12.5-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Jun 14 14:19:26 2018
InstallationDate: Installed on 2018-06-14 (0 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: plasma-desktop
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Scarlett Gately Moore (scarlettmoore)]

This bug is very old, if it is still an issue please update the bug with information from a supported release.

[Launchpad Janitor (janitor)]

[Expired for plasma-desktop (Ubuntu) because there has been no activity for 60 days.]