Voilà le résultat
● packagekit.service - PackageKit Daemon
Loaded: loaded (/usr/lib/systemd/system/packagekit.service; static; vendor preset: disabled)
Active: active (running) since Wed 2020-05-20 08:09:11 CEST; 6h ago
Main PID: 1542 (packagekitd)
Tasks: 6 (limit: 4511)
Memory: 394.3M
CPU: 16.319s
CGroup: /system.slice/packagekit.service
├─1542 /usr/libexec/packagekitd
├─4486 gpg-agent --homedir /var/cache/PackageKit/32/metadata/rpmfusion-free-tainted-32-x86_64.tmp/gpgdir --use-standard-socket --daemon
├─4504 gpg-agent --homedir /var/cache/PackageKit/32/metadata/updates-modular-32-x86_64.tmp/gpgdir --use-standard-socket --daemon
└─4562 gpg-agent --homedir /var/cache/PackageKit/32/metadata/updates-32-x86_64.tmp/gpgdir --use-standard-socket --daemon
mai 20 08:09:30 dell-latitude-yann PackageKit[1542]: get-updates transaction /1351_adcddcae from uid 1000 finished with success after 2569ms
mai 20 08:09:30 dell-latitude-yann PackageKit[1542]: resolve transaction /1352_dbbcbdab from uid 1000 finished with success after 37ms
mai 20 08:09:30 dell-latitude-yann PackageKit[1542]: get-details transaction /1353_eebbadbc from uid 1000 finished with success after 205ms
mai 20 08:10:23 dell-latitude-yann PackageKit[1542]: uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
mai 20 08:10:23 dell-latitude-yann PackageKit[1542]: uid 1000 obtained auth for org.freedesktop.packagekit.system-sources-refresh
mai 20 08:10:32 dell-latitude-yann PackageKit[1542]: refresh-cache transaction /1354_ddbdeaaa from uid 1000 finished with success after 8897ms
mai 20 08:10:33 dell-latitude-yann PackageKit[1542]: get-updates transaction /1355_ccadcdab from uid 1000 finished with success after 759ms
mai 20 08:10:36 dell-latitude-yann PackageKit[1542]: get-updates transaction /1356_bedbbcbb from uid 1000 finished with success after 47ms
mai 20 14:33:22 dell-latitude-yann PackageKit[1542]: get-updates transaction /1357_aceddddb from uid 1000 finished with success after 2394ms
mai 20 14:35:14 dell-latitude-yann PackageKit[1542]: resolve transaction /1358_bdeeaadd from uid 1000 finished with success after 2466ms
Merci à tous pour votre bienveillance. Je vais prendre le temps d'aller voir les liens @Nicoss
Yann