Donc j'ai fait, en bootant sur le noyau 5.6.7:
# dnf reinstall kernel*
Last metadata expiration check: 0:41:25 ago on Mon 11 May 2020 01:56:02 PM CEST.
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Reinstalling:
kernel x86_64 5.6.8-200.fc31 updates 46 k
kernel-core x86_64 5.6.8-200.fc31 updates 32 M
kernel-devel x86_64 5.6.8-200.fc31 updates 13 M
kernel-headers x86_64 5.6.7-200.fc31 updates 1.2 M
kernel-modules x86_64 5.6.8-200.fc31 updates 29 M
kernel-modules-extra x86_64 5.6.8-200.fc31 updates 2.0 M
Transaction Summary
================================================================================
Total size: 77 M
Total download size: 1.2 M
Installed size: 157 M
Is this ok [y/N]: y
Downloading Packages:
[SKIPPED] kernel-5.6.8-200.fc31.x86_64.rpm: Already downloaded
[SKIPPED] kernel-core-5.6.8-200.fc31.x86_64.rpm: Already downloaded
[SKIPPED] kernel-devel-5.6.8-200.fc31.x86_64.rpm: Already downloaded
[SKIPPED] kernel-modules-5.6.8-200.fc31.x86_64.rpm: Already downloaded
[SKIPPED] kernel-modules-extra-5.6.8-200.fc31.x86_64.rpm: Already downloaded
(6/6): kernel-headers-5.6.7-200.fc31.x86_64.rpm 3.2 MB/s | 1.2 MB 00:00
--------------------------------------------------------------------------------
Total 1.9 MB/s | 1.2 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Reinstalling : kernel-core-5.6.8-200.fc31.x86_64 1/12
Running scriptlet: kernel-core-5.6.8-200.fc31.x86_64 1/12
Reinstalling : kernel-modules-5.6.8-200.fc31.x86_64 2/12
Running scriptlet: kernel-modules-5.6.8-200.fc31.x86_64 2/12
Reinstalling : kernel-5.6.8-200.fc31.x86_64 3/12
Reinstalling : kernel-modules-extra-5.6.8-200.fc31.x86_64 4/12
Running scriptlet: kernel-modules-extra-5.6.8-200.fc31.x86_64 4/12
Reinstalling : kernel-headers-5.6.7-200.fc31.x86_64 5/12
Reinstalling : kernel-devel-5.6.8-200.fc31.x86_64 6/12
Running scriptlet: kernel-devel-5.6.8-200.fc31.x86_64 6/12
Cleanup : kernel-5.6.8-200.fc31.x86_64 7/12
Running scriptlet: kernel-5.6.8-200.fc31.x86_64 7/12
Cleanup : kernel-headers-5.6.7-200.fc31.x86_64 8/12
Cleanup : kernel-devel-5.6.8-200.fc31.x86_64 9/12
Cleanup : kernel-modules-extra-5.6.8-200.fc31.x86_64 10/12
Running scriptlet: kernel-modules-extra-5.6.8-200.fc31.x86_64 10/12
Cleanup : kernel-modules-5.6.8-200.fc31.x86_64 11/12
Running scriptlet: kernel-modules-5.6.8-200.fc31.x86_64 11/12
Running scriptlet: kernel-core-5.6.8-200.fc31.x86_64 12/12
Cleanup : kernel-core-5.6.8-200.fc31.x86_64 12/12
Running scriptlet: kernel-core-5.6.8-200.fc31.x86_64 12/12
Running scriptlet: kernel-core-5.6.8-200.fc31.x86_64 12/12
Verifying : kernel-5.6.8-200.fc31.x86_64 1/12
Verifying : kernel-5.6.8-200.fc31.x86_64 2/12
Verifying : kernel-core-5.6.8-200.fc31.x86_64 3/12
Verifying : kernel-core-5.6.8-200.fc31.x86_64 4/12
Verifying : kernel-devel-5.6.8-200.fc31.x86_64 5/12
Verifying : kernel-devel-5.6.8-200.fc31.x86_64 6/12
Verifying : kernel-headers-5.6.7-200.fc31.x86_64 7/12
Verifying : kernel-headers-5.6.7-200.fc31.x86_64 8/12
Verifying : kernel-modules-5.6.8-200.fc31.x86_64 9/12
Verifying : kernel-modules-5.6.8-200.fc31.x86_64 10/12
Verifying : kernel-modules-extra-5.6.8-200.fc31.x86_64 11/12
Verifying : kernel-modules-extra-5.6.8-200.fc31.x86_64 12/12
Reinstalled:
kernel-5.6.8-200.fc31.x86_64 kernel-core-5.6.8-200.fc31.x86_64 kernel-devel-5.6.8-200.fc31.x86_64 kernel-headers-5.6.7-200.fc31.x86_64
kernel-modules-5.6.8-200.fc31.x86_64 kernel-modules-extra-5.6.8-200.fc31.x86_64
Complete!
# exit
% uname -r
5.6.8-200.fc31.x86_64
Donc je suis bien sur le dernier noyau et tout va bien ...
# dnf upgrade
Last metadata expiration check: 1:43:36 ago on Mon 11 May 2020 01:56:02 PM CEST.
Dependencies resolved.
Nothing to do.
Complete!
Bon je ferme ce ticket, bien que je n'ai toujours pas compris le probleme ... Sauf que la prochaine fois je ferai en ligne de commande plutot qu'avec dnfdragora (j'ai cette, peut etre, mauvaise habitude d'utiliser dnfdragora pour faire les mises a jour, alors que j'utilise toujours la ligne de commande pour le reste !).
Et merci madko, toujours sympa de partager les infos/idees/etc.