I have upgraded ubuntu to 12.04 and now there is a problem in logging in after lock screen: it says the password is incorrect even though I provide the valid password. I found a temporary solution by switching the user and logging in again with the same user.
I had the same issue. It is likely the ownership is wrong for
You need to
The interesting question is "Why ownership changed?". Because I don't remember changing it.
I could resolve this issue with the following permission changes:
Found here: http://ubuntuforums.org/showthread.php?t=1006366
I am using Ubuntu 14.04 and I had the same issue
By mistake I ran a chown on the root filesystem (Yikes!) and since then I started having the issue described here.
I ran the command given in oshobov's answer, but that did not work for me, but using my own account instead of root made it work.
protected by Community♦ Dec 24 '14 at 13:57
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?