Yes, kernel 5.7 is too new for nvidia-340. You will need to go back to the official Ubuntu kernel (5.4) first.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1889377 Title: gnome-shell using lot of CPU (costantly 30% - often up to 100%) making my system quite slow Status in gnome-shell package in Ubuntu: Invalid Bug description: I've read it might be an issue related to NVidia running on noveaux drivers. Actually this is my configuration (NVidia G92 [GeForce 9600 GSO]) with noveaux because if I install proprietary NVidia drivers, I cannot boot (system freezes on purple screen at boot before asking for login) even with all the proper configurations(nomodeset on grub, WaylandEnable=false in /etc/gdm3/custom.conf) 1) Ubuntu release: Ubuntu 20.04.1 LTS 2) apt-cache policy gnome-shell gnome-shell: Installed: 3.36.3-1ubuntu1~20.04.2 Candidate: 3.36.3-1ubuntu1~20.04.2 Version table: *** 3.36.3-1ubuntu1~20.04.2 500 500 http://it.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 3.36.1-5ubuntu1 500 500 http://it.archive.ubuntu.com/ubuntu focal/main amd64 Packages 3) System running quick 4) System very slow ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.36.3-1ubuntu1~20.04.2 Uname: Linux 5.7.10-050710-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 CasperMD5CheckResult: skip Date: Wed Jul 29 10:31:30 2020 DisplayManager: gdm3 GsettingsChanges: InstallationDate: Installed on 2020-07-16 (12 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) RelatedPackageVersions: mutter-common 3.36.3-0ubuntu0.20.04.1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1889377/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

