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There are other questions similar, but none have answers for this situation.

Any time I enter my pw into the terminal, it works fine. But gsku thinks it's wrong. I've tried several times, and typing very slowly. I know I'm entering it correctly. Any ideas?

Answers to questions:

  • The answer linked doesn't apply because the gksu properties are set correctly.
  • Resetting the pw didn't help.
  • I was referring to the 10-key pad.
Keiva
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  • Are there any non-standard characters? These might be interpreted differently by sudo and a graphical application program. – sudodus Dec 31 '16 at 19:00
  • @ sudodus No, only numbers. I've tried using the 10-key and the standard keys. – Keiva Dec 31 '16 at 19:01
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    Is it only `gksu` or does `sudo` also think it's wrong? – WinEunuuchs2Unix Dec 31 '16 at 19:02
  • What is the 10-key? Do you mean F10? – sudodus Dec 31 '16 at 19:05
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    Does [desgua's answer](https://askubuntu.com/a/57452) to [Password not working in Graphical Applications (gksu)? Works with sudo](https://askubuntu.com/questions/48215/password-not-working-in-graphical-applications-gksu-works-with-sudo/57452) help? You've said similar questions haven't helped you--can you give specific details about the other things you've found, why they're inapplicable, everything you have tried, and exactly what happened? How are you running gksu? You can [edit your question](https://askubuntu.com/posts/866562/edit) to add this and any other possibly relevant information. – Eliah Kagan Dec 31 '16 at 19:13
  • This is *not* a duplicate. The item you've linked to doesn't answer the question either. – James Mar 13 '18 at 16:32

1 Answers1

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tl;dr: Try using gksudo instead.

Explanation

gksu makes you enter the root password. By default, Ubuntu does not have a password for the root user. gksudo makes you enter the password for an ordinary user that happens to have superuser privileges.

Community
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PRH
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    If I am not mistaken, in Ubuntu `gksu` is an alias of `gksudo`, as the `root` password is not set by default. See http://askubuntu.com/questions/21033/what-is-the-difference-between-gksudo-and-gksu – user68186 Dec 31 '16 at 19:24
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    @user68186 `gksu` and `gksudo` don't *always* act the same way on Ubuntu. Neither is an alias of the other, but it's true `gksudo` is a symbolic link to `gksu`, so the same executable runs whichever one is used. But [that executable actually checks the name that was used to invoke it, and may behave differently depending on how the user has configured it](http://manpages.ubuntu.com/manpages/xenial/en/man1/gksu.1.html). `gksu` *should* behave the same way as `gksudo` on Ubuntu, but unfortunately this seems to depend on how it was installed (not all Ubuntu flavors preinstall `gksu` and `gkudo`). – Eliah Kagan Dec 31 '16 at 19:52