This issue seems to be caused by App Armor's profile "unprivileged_userns".
dmesg has the following report. ----- [ 2229.188009] audit: type=1400 audit(1714466038.573:555): apparmor="DENIED" operation="capable" class="cap" profile="unprivileged_userns" pid=20223 comm="texinfo-dummy-n" capability=21 capname="sys_admin" ----- And can be temporally resolved by unloading the profile. ----- $ sudo apparmor_parser -R /etc/apparmor.d/unprivileged_userns ----- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2056555 Title: Python can't write to /proc files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dash/+bug/2056555/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
