pam-login blocks shadow

bur · Apprentice Joined: 20 Feb 2004 Posts: 229

If you accidently unmerged pam-login w/o merging shadow before logging out, here's what I did to solve the problem:

Cannot login - password isn't asked for [solved]

There's a step-by-step what I did. Only thing that might need to be adjusted is how to start your internet connection. I do this by net.eth0 start, replace if necessary.

Pat-rizio · n00b Joined: 05 Apr 2004 Posts: 69

Wow, thank you so much bur, you gave me the hint to find the solution to fix my problem.

I made the steps you suggested, I emerged shadow, but at first I couldn't log in after reboot...

So I entered my box a second time using your steps, then I changed all my user account's password using passwd command.

And voilà... now I can login again in box!

I think that when a week ago I unmerged pam-login then I reboot without emerging shadow, my system lost user accounts password or something like this... Now changing them using passwd renew my system!

Thanks to all you guys!

Joo · n00b Joined: 08 Sep 2005 Posts: 16 Location: Texas

Thanks for the tip.

Joo.

abbas · n00b Joined: 24 Jun 2006 Posts: 5

Hi.

Sorry, I am new to Gentoo.

I am trying to update my system.

running emerge --update --deep world (accord to help) will update system, but I get the following error:

tobimat80 · Posted: Sat Jun 24, 2006 12:54 pm Post subject:

Hi!

I would say you do exactly what emerge wants from you: use the "--pretend" option to identify the blocker (it is indicated by a "b")

Cheers,
tobias
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mark_alec · Posted: Sat Jun 24, 2006 12:58 pm Post subject:

Merged above two posts.

abbas, you need to umerge pam-login and emerge shadow.

bur · Apprentice Joined: 20 Feb 2004 Posts: 229

It is important that after unmerging pam-login you emerge shadow _before_ logging off. Otherwise your login prompt will be broken.

frankpettersen · n00b Joined: 08 Jun 2004 Posts: 7

FRiO · n00b Joined: 30 Jun 2003 Posts: 45

Just on this topic - I unmerged pam-login started my emerge -uD world, figuring if stuff was broken I'd re-emerge it when the emerge was completed. I ran the emerge in a screen session.

I then stupidly forgot what I had done and logged off (as X updates had to occur so I figured it'd be smart to have X closed... *sigh*). Anyway, my question is: when the emerge completes, will I be able to log in again? Or will I have to recover via the LiveCD route?

bur · Apprentice Joined: 20 Feb 2004 Posts: 229

When emerge is still running, you're not completely logged off. If you want to be 100% safe, cancel the emerge (preferably between two packages, so no compilation work gets lost) and run "emerge shadow". After that you can reboot and will find the login prompt working just fine.

BTW, no need to shutdown X (or any other program) when updating. All files are updated in the background and the next time you start X (or the updated program) the new version will be used.

FRiO · n00b Joined: 30 Jun 2003 Posts: 45

Emerge was running in a (now-detached) screen session

. I'll wait till the fan on the laptop buzzes down (the only load indicator I have now!) and then try logging in again.

And yeah, I didn't figure there was a need to close X, but I'm on a month of uptime on it now so I figured it'd be for the best to restart X at some point :p.

fr3akX · n00b Joined: 17 Oct 2005 Posts: 31 Location: LV

I suggest to downgrade shadow and pam-login, this works for me

bur · Apprentice Joined: 20 Feb 2004 Posts: 229

I don't think downgrading is a good idea. Why not unmerge pam-login and than emerge the new shadow package?

TheCarNinja · Posted: Wed Jul 05, 2006 11:22 pm Post subject:

Ditto! This helped me out as well. Kudos!
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FRiO · n00b Joined: 30 Jun 2003 Posts: 45

For the record, when the emerge finished my login worked just fine

.

Cheers screen!

laika · n00b Joined: 25 Jul 2002 Posts: 30 Location: Plano, TX

This is EXACTLY this sort of CRAP that is leading me after 6 years of being a hard-core gentoo user to switch completely over to debian. I'm fixing this one last issue, then adios super-unstable portage tree... sheesh.. you would've thought in all this time they could have introduce a reasonable stable branch.

kg4ysy · Posted: Tue Jul 11, 2006 5:20 pm Post subject:

This one should definately stay sticky...I can't believe I found a solution so quickly

thx

--Jim

slycordinator · Advocate Joined: 31 Jan 2004 Posts: 3065 Location: Korea

snookie · n00b Joined: 14 Jul 2006 Posts: 2

emerge -C pam-login && emerge -1 shadow

Worked for me, thank you so much.

bluni · n00b Joined: 27 Jan 2006 Posts: 29

I have a headless file server stored away in my basement. SSH is my only means of running emerge on that machine (without a lot of work to get a monitor and a keyboad back there

). Will I still be able to perform

bluni · n00b Joined: 27 Jan 2006 Posts: 29

Well, I'm doing it now, so I hope it does work ;-)

.

Brian

bur · Apprentice Joined: 20 Feb 2004 Posts: 229

You probably know by now anyway, but I think there won't be / was no problem. Unmerging pam-login goes unnoticed until you reboot. So as long as you emerge a substitute for pam-login (like shadow) you should be fine, not matter if accessing via SSH or locally.

slycordinator · Advocate Joined: 31 Jan 2004 Posts: 3065 Location: Korea

bluni · n00b Joined: 27 Jan 2006 Posts: 29

imotlaw · Posted: Sat Jul 22, 2006 4:42 pm Post subject:

Out of simple curiosity, why do "emerge -1 shadow"? I realize (or think I realize) that the goal is to be able to do an "emerge -uDvaN world" later on without having to worry about shadow screwing things up, but doesn't it also mean that shadow won't be updated when doing updates to world (I realize I'm saying the same thing twice, but you understand what I mean, hopefully)?