Howdy do not start after a sudo command

[hjfisch]

I've managed Howdy to work on Mint 22 without any errors .
I can save faces and test is working as normal .
But after a sudo command , the camera will not turn on and I need to use the password .

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I've searched for similar issues already, and my issue has not been reported yet.

Linux distribution (if applicable): Mint 22

Howdy version (sudo howdy version): 2.6.1

[WGrav01]

Try adding the following to the top of your /etc/pam.d/system-auth file, if it exists:

auth sufficient pam_unix.so try_first_pass likeauth nullok
auth sufficient pam_python.so /lib/security/howdy/pam.py

For anyone using howdy 3.0.0 beta, use the following instead:

auth sufficient pam_unix.so try_first_pass likeauth nullok
auth sufficient /lib/security/pam_howdy.so

[hjfisch]

Sorry but there is no system-auth file .
Is common-auth the same ?

[hjfisch]

I've tried it with common-auth , but still the same.
The camera will not turn on and I need to use the password .
It's weird ,because Howdy is working and shows no Bugs .
Camera is turning on after sudo howdy add and is saving my face .

[Beccio00]

You can try to look inside /var/log/auth.log after trying sudo. I had the same problem and I have solve it by modifying /lib/security/howdy/pam.py and following #799. But your problem depends on the error inside auth.log.

[GKxxUCAS]

@Beccio00 I ran sudo -i, the camera did not blink and I was asked to enter the password as usual. Then I checked /var/log/auth.log and found nothing related to howdy:

2024-10-21T16:11:53.866983+08:00 gkxx-redmi-ubuntu sudo:     gkxx : TTY=pts/1 ; PWD=/root ; USER=root ; COMMAND=/bin/bash
2024-10-21T16:11:53.867412+08:00 gkxx-redmi-ubuntu sudo: pam_unix(sudo-i:session): session opened for user root(uid=0) by gkxx(uid=1000)

[Beccio00]

@GKxxUCAS Do you try to follow what is written in #799? Do you have the problem only when you ran sudo -i or also when you unlock the pc?

[joezhouchenye]

I don't even have a /lib/security or /usr/lib/security directory. I manually installed the 3.0.0 beta version.

[joezhouchenye]

My system is Ubuntu 24.04. If you build manually, the howdy program has been changed a lot. I found out that howdy no longer uses pam.py and it now uses C# to implement pam feature. Also, if you use meson install -C build to install, the installation path is completely different.

In pam profiles are in /etc/pam.d, you can just modify the common-auth as other files have @include common-auth.

Adding auth sufficient /usr/local/lib/x86_64-linux-gnu/security/pam_howdy.so on the top of common-auth works for me. However, the login has an unknown error 1 and this problem is similar to the below comment.

#711 (comment)

I haven't tried the Configure SELinux to allow Howdy to access cameras when logging in part because I don't want to do something that I am not familiar with and don't know how to undo the process.