My system was always freezing. Nautilus it is so slowing. It isn't possible to use it. My browser (firefox) is freezing too. I have try desktop Ubuntu; ubuntu (wayland), gnome. The best one is gnome (Meta City).
ProblemType: Crash
DistroRelease: Ubuntu 20.04
Package: command-not-found 20.04.2
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Apr 14 08:33:02 2020
ExecutablePath: /usr/lib/cnf-update-db
InstallationDate: Installed on 2020-04-11 (3 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
InterpreterPath: /usr/bin/python3.8
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/lib/cnf-update-db
ProcEnviron:
LANGUAGE=en_US.UTF-8
LANG=en_US.UTF-8
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonArgs: ['/usr/lib/cnf-update-db']
PythonDetails: N/A
SourcePackage: command-not-found
Title: cnf-update-db crashed with AttributeError in create(): module 'json' has no attribute 'dump'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.