Re: su doesn't work "Authentication failure"
- From: "Damon L. Chesser" <damon@xxxxxxxxxx>
- Date: Thu, 31 Jan 2008 11:20:43 -0500
paul wrote:
Hello,Paul,
on my debian etch machine 'su' doesn't work if a password is needed.
It is possible to do 'su someuser' from root but it's not possible to
get back to root then using just 'su' or change from a normal user to
another user account.
myserver:/tmp$ su
Password:
su: Authentication failure
Sorry.
auth.log says:
Jan 31 15:44:18 myserver su[27729]: (pam_unix) authentication failure;
logname= uid=1000 euid=1000 tty=pts/4 ruser=myuser rhost= user=root
Jan 31 15:44:20 myserver su[27729]: pam_authenticate: Authentication
failure
Jan 31 15:44:20 myserver su[27729]: FAILED su for root by myuser
Jan 31 15:44:20 myserver su[27729]: - pts/4 myuser:root
I suspect sth. in with the pam module got broken.
Any suggestions how to go on?
thx, paul
I had the same issue. I fixed it by doing two things:
1. I used sudo to su to root "sudo su"
2. As I had a BadCRC reported on a HD, I had to re-configure my hardware setup and re-install.
The first is a bandaide. The 2nd is a shotgun to kill a bug. Both worked. The source was never found.
HTH
--
Damon L. Chesser
damon@xxxxxxxxxx
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