I came across the same issue with a guest distro.
I finally solved it by editing the XML File of the "Display Spice" section in
the VM settings in virt-manager.
Open the details window of the affected VM in virt-manager.
Navigate to the section "Display Spice".
Click on the Tab "XML" (XML editing has to be enabled in the virt-manager
settings).
Display Spice" section can be editted manually.
Add "<clipboard copypaste="no"/>" to the XML. It should look like this:
<graphics type="spice" autoport="yes">
<listen type="address"/>
<clipboard copypaste="no"/>
</graphics>
Source: https://unix.stackexchange.com/questions/341881/virt-manager-
copy-and-paste-is-possible-to-disable-it
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to spice-vdagent in Ubuntu.
https://bugs.launchpad.net/bugs/1872527
Title:
Clipboard doesn't work 100% of the time in Ubuntu 20.04 (in KVM
guests)
Status in qemu package in Ubuntu:
Invalid
Status in spice package in Ubuntu:
Invalid
Status in spice-protocol package in Ubuntu:
Fix Released
Status in spice-vdagent package in Ubuntu:
Fix Released
Status in virt-manager package in Ubuntu:
Invalid
Status in spice-protocol source package in Focal:
Incomplete
Status in spice-vdagent source package in Focal:
Incomplete
Status in spice-vdagent package in Debian:
Fix Released
Status in spice package in Fedora:
Unknown
Bug description:
https://gitlab.freedesktop.org/spice/linux/vd_agent/issues/9
---
I'm testing Ubuntu 20.04 LTS (Focal Fossa) Beta.
I installed Kubuntu 20.04 and virt-manager as I did many times on
Ubuntu 18.04. Unfortunatelly when I run a VM (QEMU-KVM, libvirt,
libspice-server1 and spice-vdagent) with another Kubuntu 20.04 guest
or with Ubuntu 20.04 guest then clipboard doesn't work right.
To test it, please install Kubuntu 20.04 and then install Kubuntu /
Ubuntu 20.04 as VM (guest). Open some simple text editor and start
Ctrl + C and Ctrl + V plain text. 90% of time it will work and 10% of
time it won't.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: virt-manager 1:2.2.1-3ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Mon Apr 13 15:02:22 2020
InstallationDate: Installed on 2020-04-09 (4 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200401)
PackageArchitecture: all
SourcePackage: virt-manager
UpgradeStatus: No upgrade log present (probably fresh install)
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