Hi @pebcak
Out of curiosity, I started to read the errors and saw that the boxes did not open for lack of such a “dmidecode” and I ended up installing it, finally it started to open and the crashes continued, but with one less error message. Finally, I tried to use virt-manager and there is also an error in virtqemu.
mai 12 08:53:53 edson-p6540br gnome-shell[1521]: updates_checker.vala:71: check updates
mai 12 08:53:55 edson-p6540br systemd[1447]: vte-spawn-8de7846d-907e-4b7b-98f7-4c8ad9cbc41d.scope: Consumed 2.633s CPU time.
mai 12 08:53:56 edson-p6540br gnome-shell[1521]: updates_checker.vala:101: 0 updates found
mai 12 08:53:59 edson-p6540br gnome-shell[1521]: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
mai 12 08:54:13 edson-p6540br systemd[1447]: Started Application launched by gnome-shell.
mai 12 08:54:16 edson-p6540br systemd[1]: Starting Virtualization qemu daemon...
mai 12 08:54:16 edson-p6540br systemd[1]: Started Virtualization qemu daemon.
mai 12 08:54:16 edson-p6540br audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=virtqemud comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:54:16 edson-p6540br kernel: audit: type=1130 audit(1652356456.509:149): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=virtqemud comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:54:16 edson-p6540br dbus-daemon[611]: [system] Activating via systemd: service name='org.freedesktop.home1' unit='dbus-org.freedesktop.home1.service' requested by ':1.141' (uid=0 pid=5615 comm="/usr/lib/polkit-1/polkit-agent-helper-1 edson")
mai 12 08:54:16 edson-p6540br dbus-daemon[611]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.home1.service': Unit dbus-org.freedesktop.home1.service not found.
mai 12 08:54:16 edson-p6540br polkit-agent-helper-1[5615]: pam_systemd_home(polkit-1:auth): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
mai 12 08:54:26 edson-p6540br audit[5615]: USER_AUTH pid=5615 uid=1000 auid=1000 ses=4 msg='op=PAM:authentication grantors=pam_faillock,pam_permit,pam_faillock acct="edson" exe="/usr/lib/polkit-1/polkit-agent-helper-1" hostname=? addr=? terminal=? res=success'
mai 12 08:54:26 edson-p6540br audit[5615]: USER_ACCT pid=5615 uid=1000 auid=1000 ses=4 msg='op=PAM:accounting grantors=pam_unix,pam_permit,pam_time acct="edson" exe="/usr/lib/polkit-1/polkit-agent-helper-1" hostname=? addr=? terminal=? res=success'
mai 12 08:54:26 edson-p6540br kernel: audit: type=1100 audit(1652356466.735:150): pid=5615 uid=1000 auid=1000 ses=4 msg='op=PAM:authentication grantors=pam_faillock,pam_permit,pam_faillock acct="edson" exe="/usr/lib/polkit-1/polkit-agent-helper-1" hostname=? addr=? terminal=? res=success'
mai 12 08:54:26 edson-p6540br kernel: audit: type=1101 audit(1652356466.735:151): pid=5615 uid=1000 auid=1000 ses=4 msg='op=PAM:accounting grantors=pam_unix,pam_permit,pam_time acct="edson" exe="/usr/lib/polkit-1/polkit-agent-helper-1" hostname=? addr=? terminal=? res=success'
mai 12 08:54:26 edson-p6540br polkitd[903]: Operator of unix-session:3 successfully authenticated as unix-user:edson to gain TEMPORARY authorization for action org.libvirt.unix.manage for unix-process:5570:23987 [/usr/bin/python /usr/bin/virt-manager] (owned by unix-user:edson)
mai 12 08:54:27 edson-p6540br kernel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
mai 12 08:54:27 edson-p6540br virtqemud[5594]: libvirt version: 8.3.0
mai 12 08:54:27 edson-p6540br virtqemud[5594]: hostname: edson-p6540br
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnetworkd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnodedevd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnetworkd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnodedevd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnetworkd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnodedevd-sock': Arquivo ou diretório inexistente
mai 12 08:54:27 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:57:17 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnetworkd-sock': Arquivo ou diretório inexistente
mai 12 08:57:17 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:57:17 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtnodedevd-sock': Arquivo ou diretório inexistente
mai 12 08:57:21 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:57:23 edson-p6540br dbus-daemon[611]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.143' (uid=1000 pid=5570 comm="/usr/bin/python /usr/bin/virt-manager")
mai 12 08:57:24 edson-p6540br audit: BPF prog-id=40 op=LOAD
mai 12 08:57:24 edson-p6540br audit: BPF prog-id=41 op=LOAD
mai 12 08:57:24 edson-p6540br audit: BPF prog-id=42 op=LOAD
mai 12 08:57:24 edson-p6540br systemd[1]: Starting Hostname Service...
mai 12 08:57:24 edson-p6540br kernel: audit: type=1334 audit(1652356644.000:152): prog-id=40 op=LOAD
mai 12 08:57:24 edson-p6540br kernel: audit: type=1334 audit(1652356644.000:153): prog-id=41 op=LOAD
mai 12 08:57:24 edson-p6540br kernel: audit: type=1334 audit(1652356644.000:154): prog-id=42 op=LOAD
mai 12 08:57:24 edson-p6540br dbus-daemon[611]: [system] Successfully activated service 'org.freedesktop.hostname1'
mai 12 08:57:24 edson-p6540br systemd[1]: Started Hostname Service.
mai 12 08:57:24 edson-p6540br audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:57:24 edson-p6540br kernel: audit: type=1130 audit(1652356644.057:155): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:57:32 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:57:54 edson-p6540br systemd[1]: systemd-hostnamed.service: Deactivated successfully.
mai 12 08:57:54 edson-p6540br audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:57:54 edson-p6540br kernel: audit: type=1131 audit(1652356674.550:156): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
mai 12 08:57:54 edson-p6540br audit: BPF prog-id=0 op=UNLOAD
mai 12 08:57:54 edson-p6540br audit: BPF prog-id=0 op=UNLOAD
mai 12 08:57:54 edson-p6540br audit: BPF prog-id=0 op=UNLOAD
mai 12 08:57:54 edson-p6540br kernel: audit: type=1334 audit(1652356674.654:157): prog-id=0 op=UNLOAD
mai 12 08:57:54 edson-p6540br kernel: audit: type=1334 audit(1652356674.654:158): prog-id=0 op=UNLOAD
mai 12 08:57:54 edson-p6540br kernel: audit: type=1334 audit(1652356674.654:159): prog-id=0 op=UNLOAD
mai 12 08:58:12 edson-p6540br virtqemud[5594]: falha ao conectar o soquete ao '/var/run/libvirt/virtstoraged-sock': Arquivo ou diretório inexistente
mai 12 08:59:01 edson-p6540br gnome-shell[1521]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x562ef02f0340] is on because it needs an allocation.
mai 12 08:59:01 edson-p6540br gnome-shell[1521]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x562ef1b0c720] is on because it needs an allocation.
mai 12 08:59:01 edson-p6540br gnome-shell[1521]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x562ef1b0e6b0] is on because it needs an allocation.
Here is the image of virt-manager
