Htop: Cannot change "nice" value: F7 does nothing

[RalfJung]

I wanted to change the nice value of a process by hitting F7, but the only thing that happens is that the terminal bell gets triggered. There is no error message nor any other indication of what might be wrong. I tried many different processes, including ones that are started by me and run in the same session.

This is using gnome-terminal. I also tried KDE's konsole, and then I don't even get a terminal bell.

[dodona2]

cannot confirm that. Works for me.

[RalfJung]

This is using the htop packaged with Debian.

$ htop --version
htop 2.2.0 - (C) 2004-2018 Hisham Muhammad
Released under the GNU GPL.

[wangqr]

Is Nice+(F8) working? You may need sudo to lower the nice of a process

[RalfJung]

Oh. I didn't even see the "-" after "nice", nor the "nice +" next to it.

So yeah, my fault. However, it would be nice if the feedback in case of "not enough permissions" would be more informative than just triggering a terminal bell. Some kind of message being printed somewhere would be useful.