Spice works on Ubuntu, not on Debian guests

[lelegard]

Configuration

• UTM Version: 4.2.5
• macOS Version: 13.3.1
• Mac Chip: M1

Ubuntu 23.04 guest:

• Installed several months ago with a previous version of UTM.
• spice-vdagent 0.22.1-3 is installed.
• It works correctly:
  • The display is reconfigured on resize.
  • The shared folder is correctly mounted.

Debian 11.7 guest:

• Just installed using UTM 4.2.5.
• spice-vdagent 0.20.0-2 is installed.
• Does not work:
  • The display is not reconfigured on resize, it proportionally shrinks or enlarges.
  • The shared folder cannot be mounted

# modprobe 9pnet_virtio
# mount -t 9p -o trans=virtio share /shared
mount: /shared: special device share does not exist.

Is this due to Ubuntu vs Debian? Spice agent 0.22 vs. 0.20 (the standard versions on their respective distro)? Something else?

[dmarmor]

I'm having the same problem with the shared directory on Debian. I get the following error:

$ sudo mount -t 9p -o trans=virtio share test -oversion=9p2000.L
mount: /home/XX/XXXX: special device share does not exist.
       dmesg(1) may have more information after failed mount system call.

Here's the relevant output from dmesg:

9pnet_virtio: no channels available for device share

Any ideas how to fix this? Thanks!