I can't redirect USB storage media to the KVM guest using VMM after system update.

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My problem was using KVM virtual machine under Ubuntu, USB devices cannot be transferred to the virtual machine through spice.

The following prompt appeared:
spice-client-error-quark: Could not redirect USB Device [046d:081b] at 3-2: Error setting USB device node ACL: ‘Not authorized’ (0)

Solution:

Modify rule file: /usr/share/polkit-1/actions/org.spice-space.lowlevelusbaccess.policy

Add “allow_ Any” and modify “allow_ The inactive” is sufficient.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
          "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
          "http://www.freedesktop.org/standards/PolicyKit/1.0/policyconfig.dtd">
<policyconfig>


  <vendor>The Spice Project</vendor>
  <vendor_url>http://spice-space.org/</vendor_url>
  <icon_name>spice</icon_name>


  <action id="org.spice-space.lowlevelusbaccess">
    <description>Low level USB device access</description>
    <message>Privileges are required for low level USB device access (for usb device pass through).</message>
    <defaults>
      <allow_any>yes</allow_any>
      <allow_inactive>yes</allow_inactive>
      <allow_active>yes</allow_active>
    </defaults>
  </action>


</policyconfig>

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