Hello Folks! The distro I use (Guix System) has updated it's virt-manager version from 5.4.x to 5.5.x, few days ago. After the update, there is this following error: "libvirt.libvirtError: Unable to read from '/sys/fs/cgroup/unified/machine/cgroup.controllers': No such file or directory". It appears that application is searching "/sys/fs/cgroup/unified/machine/cgroup.controllers" path, instead of "/sys/fs/cgroup/unified/cgroup.controllers" path; as the directory "machine" does not actually exist. The full error message from virt-manager can be found at https://bin.di sroot.org/?156a2a4e2cfe82db#6RAqhW+4CS423rqr2XKmXqngWsy5yYJ24499VXH2Cr0 = The virt-manager was working just fine before the update. So it seems like a critical bug with version 5.5.x that needs to be patched ASAP. Thank you! Regards, RG. _______________________________________________ virt-tools-list mailing list virt-tools-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/virt-tools-list