Package: policykit-1 Version: 0.105-28 Severity: important After the upgrade to policykit-1 version 0.105-28 the Virtual Machine Manager is unable to authorize (no password prompt pops up).
polkitd logs: Jul 17 19:57:36 debianHome polkitd(authority=local)[16397]: Operator of unix-session:2 FAILED to authenticate to gain authorization for action org.libvirt.unix.manage for unix-process:15917:257992 [/usr/bin/python3 /usr/share/virt-manager/virt-manager] (owned by unix-user:christian) Jul 17 19:57:36 debianHome libvirtd[964]: authentication failed: access denied by policy Jul 17 19:57:36 debianHome libvirtd[964]: End of file while reading data: Input/output error Virtual Machine Manager output: Unable to connect to libvirt qemu:///system. authentication failed: access denied by policy Libvirt URI is: qemu:///system Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 956, in _do_open self._backend.open(connectauth.creds_dialog, self) File "/usr/share/virt-manager/virtinst/connection.py", line 172, in open conn = libvirt.openAuth(self._open_uri, File "/usr/lib/python3/dist-packages/libvirt.py", line 104, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirt.libvirtError: authentication failed: access denied by policy After downgrade to -26: Jul 17 20:06:09 debianHome polkitd(authority=local)[17458]: Operator of unix-session:2 successfully authenticated as unix-user:root to gain TEMPORARY authorization for action org.libvirt.unix.manage for unix-process:15917:257992 [/usr/bin/python3 /usr/share/virt-manager/virt-manager] (owned by unix-user:christian)