On Apr 06, 2019, at 01:33 AM, Pierre Labastie via blfs-support <[email protected]> wrote: On 06/04/2019 05:14, Hans Malissa via blfs-support wrote: I'm in the process of re-installing Shadow-4.6 with Linux-PAM in 8.4-systemd, following the instructions on http://linuxfromscratch.org/blfs/view/stable-systemd/postlfs/shadow.html. I've compiled and installed Shadow so far, and I'm following the instructions in the configuration section. I've gotten to the point where the 'Warning' box recommends to switch to another terminal, login as normal user, and su to root. When I try this, I get
$ su Password: su: Permission denied (The password is correct--I can directly login as root, but not use su). I've picked through all the configuration files, but I can't find anything wrong. What am I missing or doing wrong? Greetings, Looks like the proposed configuration in /etc/pam.d/su limits the use of "su" to users in the "wheel" group. You may try to do "usermod -a -G wheel <user>" (as root). We should update the text in the warning... Or comment out the "auth required pam_wheel.so use_uid" line in /etc/pam.d/su, adding "# Uncomment the following line if you want to limit su to users in the wheel group." That did the trick! I added my user to the 'wheel' group, and now it's working. This is a change from previous BLFS versions, but it makes sense. Thanks a lot, Hans
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