Question

9

Lock screen - password incorrect

rated 0 times [ 9] [ 0] / answers: 1 / hits: 12028 / 3 Years ago, sat, october 2, 2021, 1:06:40

I have upgraded Ubuntu to 12.04 and now I have a problem in logging in after locking the screen: it says the password is incorrect even though I provide the valid password. I found a temporary solution by switching users and logging in again with the same user.

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exceeeelh

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answered 3 Years ago termetalli · Accepted Answer

I had the same issue. It is likely the ownership is wrong for /etc/shadow (See section "gnome-screensaver authentication failure with incorrect /etc/shadow permissions" of this page).

You need to sudo chown root:shadow /etc/shadow then sudo chmod u=r,g=r /etc/shadow See this bug report.

The interesting question is "Why ownership changed?". Because I don't remember changing it.