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[fprietog <2127725@xxxxxxxxxxxxxxxxxx>]

** Also affects: tpm-udev (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2127725

Title:
  [Ubuntu 25.10 Questing] Errors during boot related to lack of "tss"
  user and group

Status in dracut package in Ubuntu:
  New
Status in tpm-udev package in Ubuntu:
  New
Status in tpm2-tss package in Ubuntu:
  New

Bug description:
  After upgrading from Ubuntu 25.04 plucky to 25.10 questing there are
  several errors shown during every boot process:

  systemd-tmpfiles[305]: Failed to parse ACL "default:group:tss:rwx", ignoring: No such file or directory
  systemd-tmpfiles[305]: Failed to parse ACL "default:group:tss:rwx", ignoring: No such file or directory
  systemd-tmpfiles[340]: /usr/lib/tmpfiles.d/tpm2-tss-fapi.conf:2: Failed to resolve user 'tss': No such process
  systemd-tmpfiles[340]: Failed to parse ACL "default:group:tss:rwx", ignoring: No such file or directory
  systemd-tmpfiles[340]: /usr/lib/tmpfiles.d/tpm2-tss-fapi.conf:4: Failed to resolve user 'tss': No such process
  systemd-tmpfiles[340]: Failed to parse ACL "default:group:tss:rwx", ignoring: No such file or directory
  systemd-tmpfiles[340]: /usr/lib/tmpfiles.d/tpm2-tss-fapi.conf:6: Failed to resolve group 'tss': No such process
  systemd-tmpfiles[340]: /usr/lib/tmpfiles.d/tpm2-tss-fapi.conf:7: Failed to resolve group 'tss': No such process
  systemd-udevd[430]: /usr/lib/udev/rules.d/60-tpm-udev.rules:3 Unknown user 'tss', ignoring.
  systemd-udevd[430]: /usr/lib/udev/rules.d/60-tpm-udev.rules:4 Unknown user 'tss', ignoring.
  systemd-udevd[430]: /usr/lib/udev/rules.d/60-tpm-udev.rules:4 Unknown group 'tss', ignoring.

  I've checked that both "tss" user and group exists.

  I think that these errors are caused as a result of "initramfs-tools"
  being replaced by "dracut". Probably old "initramfs-tools" didn't
  insert the tpm udev and tmpfiles rules in the initramfs so there were
  no problems. Seems that new "dracut" is inserting these rules/files in
  initramfs but it's not inserting the "tss" user and group needed for
  these to work.

  Additional info:
  tmpfiles rules: /usr/lib/tmpfiles.d/tpm2-tss-fapi.conf
  udev rules: /usr/lib/udev/rules.d/60-tpm-udev.rules

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