Hi, there are already threads similarly entitled with this one but my situation is different.

I re-installed Ubuntu 11.04 64-bit, because I needed it to run/install kgpu on my system for a project we're doing in school. (former kernel is 32-bit Ubuntu 11.04) I also need to install eCryptfs, so I also need to install keyutils, swig, pam and nss (the last 3 I installed using Synaptic Package Manager).

Installing keyutils (1.0 version, I think) was no problem. I was able to run make and sudo make install without any problems, that is my sudo password was recognized.

But when I tried installing eCryptfs after installing keyutils, my sudo password won't get recognized anymore when running sudo make install. I tried changing the root password through booting the recovery mode of the kernel I'm currently using but all I was getting is
passwd: Authentication token manipulation error
passwd: Password unchanged

Do anyone knows what the problem might be and how to fix it? I tried re-installing the 64-bit kernel again thinking it would solve the problem, but I guess it wouldn't.

Thanks! I appreciate any help.

Sounds like you need to mount the drive readwrite: mount -n -o remount,rw /

1 members found this post helpful.

Didn't work for me, but thanks anyway. I've solved the problem. Apparently, I have installed libpam-sss and libnss-sss when I was installing necessary libraries for eCryptfs. I've removed those libraries and I was able to log in using root password again.

Yup, that would do it. Glad to hear you got it figured out man. If you could, mark your thread as solved using the thread tools located at the top of the page, thanks!

Cheers,

Josh