Unreadable __pycache__ subdirs under subdirs of /usr/lib/python3.7 after upgrade from cosmic to disco

[Jonathan Kamens]

I was confronted with the attached dialog when my computer and tried to log me in automatically immediately after upgrading from cosmic to disco.

I checked the __pycache__ directories mentioned in the error dialog and they were indeed not world-readable.

I fixed it by logging into a VT and running "sudo chmod -R a+rX /usr/lib/python3.7".

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubuntu-release-upgrader-core 1:19.04.9
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 21 15:44:28 2019
InstallationDate: Installed on 2019-01-02 (19 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to disco on 2019-01-21 (0 days ago)
VarLogDistupgradeXorgFixuplog:
 INFO:root:/usr/bin/do-release-upgrade running
 INFO:root:No xorg.conf, exiting
modified.conffile..etc.update-manager.release-upgrades: [modified]
mtime.conffile..etc.update-manager.release-upgrades: 2019-01-21T15:24:46.608371