The documentation says:
Installing the Spice vdagent in your guest will let you copy and paste between your guest and client OSes, to drag and drop files between the 2 OSes, … In order for the agent to work, your virtual machine must have a virtio serial device (and the corresponding guest drivers) as well as a Spice spicevmc channel.
It also says:
Agent support allows better integration with the guest. For example, it allows copy and paste between the guest and the host OSes, dynamic resolution changes when the client window is resized/full-screened, file transfers through drag and drop, …
The agent is a daemon/service running in the guest OS so it must be installed if it was not installed by default during the guest OS installation. It also relies on a virtio-serial PCI device and a dedicated spicevmc char device to achieve communication between the guest and the host. These devices must be added to the virtual machine for the agent to work in the guest.
I have installed all the necessities in the guest. And then enabled the services.
sudo apt install qemu-guest-agent spice-vdagent spice-webdavd
sudo systemctl start spice-vdagent
sudo systemctl enable spice-vdagent
sudo systemctl start qemu-guest-agent
sudo systemctl enable qemu-guest-agent
sudo systemctl start spice-webdavd
sudo systemctl enable spice-webdavd
Started the vm with the following script.
qemu-system-x86_64 -accel kvm,thread=multi -cpu host -smp 2 -m 8192 \
-drive file=/media/ismail/SSDWorking/_QEMU/vm_mint.qcow2,format=qcow2,if=virtio \
-machine vmport=off \
-vga virtio -usb -device qemu-xhci -device usb-tablet \
-soundhw hda \
-spice port=5911,addr=127.0.0.1,disable-ticketing \
-device virtio-serial-pci \
-chardev spicevmc,id=spicechannel0,debug=0,name=vdagent \
-device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 \
-device virtserialport,chardev=charchannel1,id=channel1,name=org.spice-space.webdav.0 \
-chardev spiceport,name=org.spice-space.webdav.0,id=charchannel1 \
-chardev socket,path=/tmp/qga.sock,server=on,wait=off,id=qga0 \
-device virtio-serial \
-device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 \
remote-viewer --spice-shared-dir=/media/ismail/SSDWorking/_QEMU/VM_Share spice://127.0.0.1:5911 > /dev/null 2>&1 &
Now dynamic resolution changes work. However, drag and drop and copy-paste between guest and host does not work.
What might be the reason?
Thanks and Best Regards,