Auto login stopped working

Auto login stopped working

[Fredrik Salomonsson]

Hi Guix,

A few weeks back the auto-login for my media machine stopped working.  I
can still login fine with the user — `htpc`.  I've been scratching my
head on what could be the issue.  I followed the suggestion in the cookbook:

```
;; From cookbook [0]
;; [0] https://guix.gnu.org/cookbook/en/html_node/Auto_002dLogin-to-a-Specific-TTY.html
(define (auto-login-to-tty config tty user)
  (if (string=? tty (mingetty-configuration-tty config))
        (mingetty-configuration
         (inherit config)
         (auto-login user))
        config))

 (modify-services
          %plt-base-services
        (mingetty-service-type
         config => (auto-login-to-tty
                    config "tty3" "htpc")))
```

Checking the `/var/log/secure` all I see is:

```
Nov  2 13:03:16 localhost login[269]: pam_elogind(login:session): Failed to connect to system bus: No such file or directory
Nov  2 13:03:16 localhost login[269]: pam_unix(login:session): session opened for user htpc(uid=1010) by LOGIN(uid=0)
Nov  2 13:03:16 localhost login[269]: Error in service module
```

elogind and dbus-system is running, and it works fine if I manually
login on another tty, tty3 just shows the `Error in service module`
message.  Anyone know what could be the issue?

Thanks

-- 
s/Fred[re]+i[ck]+/Fredrik/g

Re: Auto login stopped working

[Rutherther]

> elogind and dbus-system is running, and it works fine if I manually
> login on another tty, tty3 just shows the `Error in service module`
> message.  Anyone know what could be the issue?

Hello Fredrik,

I don't know what the cause is, but I was able to get around it
by setting (login-pause? #t). This means I have to hit enter to log in,
but I personally actually prefer that. If this is not for you, I don't have
any more pointers unfortunately.

Regards,
Rutherther

Re: Auto login stopped working

[Fredrik Salomonsson]

Hi,

Rutherther <rutherther@ditigal.xyz> writes:

>> elogind and dbus-system is running, and it works fine if I manually
>> login on another tty, tty3 just shows the `Error in service module`
>> message.  Anyone know what could be the issue?
>
> Hello Fredrik,
>
> I don't know what the cause is, but I was able to get around it
> by setting (login-pause? #t). This means I have to hit enter to log in,
> but I personally actually prefer that. If this is not for you, I don't have
> any more pointers unfortunately.

That might be a good clue, as 

Felix Lechner <felix.lechner@lease-up.com> writes:

> Based on the log messages, it seems pam_elogind.so cannot connect to
> Dbus ("No such file or directory") and leaves the authentication token
> uninitialized, which causes an error in pam_unix.so.

So it sounds like it's failing to login due to dbus is not there.  I can
login normally with that user on a different tty and you — Rutherther —
can login if pausing the login.  Which means that dbus should be there
by then.  I wonder if there is a race condition and it is trying to
login before everything is setup, which would explain why it works when
pausing the login.

I'll do some investigation this weekend to see if I can get any the
wiser on what's going on.  And good to know that there is a workaround
with (login-pause? #t).

Thanks!

-- 
s/Fred[re]+i[ck]+/Fredrik/g