Hi. After 2 successful upgrades from F29 to F30 and 2 successful full installations, I decided to upgrade my main machine (that runs fine since past november, installed in F28 then upgraded to F29). No luck: unable to login (graphical, textual, ssh) except root. The journal shows: May 20 12:31:41 ... kernel: Linux version 5.0.16-300.fc30.x86_64 (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 9.1.1 20190503 (Red Hat 9.1.1-1) (GCC)) #1 SMP Tue May 14 19:33:09 UTC 2019 ... May 20 12:37:44 ... systemd-logind[1717]: New session 3 of user fm. May 20 12:37:44 ... systemd[1]: Starting User Manager for UID 1005... May 20 12:37:48 ... systemd[1]: Started Getty on tty2. May 20 12:38:16 ... systemd[1864]: pam_unix(systemd-user:session): session opened for user fm by (uid=0) May 20 12:38:16 ... systemd[1864]: PAM failed: Cannot allocate memory May 20 12:38:16 ... systemd[1864]: pam_unix(systemd-user:session): session closed for user fm May 20 12:38:16 ... systemd[1864]: user@1005.service: Failed to set up PAM session: Cannot allocate memory May 20 12:38:16 ... systemd[1864]: user@1005.service: Failed at step PAM spawning /usr/lib/systemd/systemd: Cannot allocate memory I add time, from a second textual console as root, to see the "systemd --user" process reach more than 40 GB of memory before dying. The lightdm session fails also with the same error. Tries that do not solved this problem: - re-installing kernel, systemd - downgrading systemd to systemd-239-12.git8bca462.fc29 - fresh install in F30 Tries that solve this problem: - adding mem=8192M to the kernel command line this machine a 64 G of memory - commenting pam_systemd.so from PAM (but want to keep it) Any idea how to debug that? Thanks a lot. -- francis _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx