[SOLVED] Perl warning about lack of a locale setting?

[oshunluvr]

Using a brand new KDEneon install. I still do my updates from the command line. Since I began using this install, I have noticed this message and warning every time I "full-upgrade" with apt:

Fetched 51.2 MB in 21s (2394 kB/s)
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "",
LC_ALL = (unset),
LC_TIME = "en_US.UTF-8",
LC_MONETARY = "en_US.UTF-8",
LC_ADDRESS = "en_US.UTF-8",
LC_TELEPHONE = "en_US.UTF-8",
LC_NAME = "en_US.UTF-8",
LC_MEASUREMENT = "en_US.UTF-8",
LC_IDENTIFICATION = "en_US.UTF-8",
LC_NUMERIC = "en_US.UTF-8",
LC_PAPER = "letter",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
locale: Cannot set LC_ALL to default locale: No such file or directory

I've done some looking about on the web and attempted all the recommended fixes, but nothing seems to stick. I set the missing locales, but they disappear at each reboot.

It doesn't seem to cause any actual problems, I'm mostly wondering if anyone else is getting this. I can fix it by adding the exports to my .profile, but I am curious if this is a "bug" or just a nothing-burger.

[oshunluvr]

So you have already set LC_ALL in /etc/default/locale to en_US.UTF-8?

Yes, like a billion times, lol. It resets after reboot : see my first post: "I set the missing locales, but they disappear at each reboot."


Turns out I was missing a package for some reason: language-selector-common

I installed that and the issue went away.

[claydoh]

I am not seeing this here on my PC. At least not today, though I think I would notice this,. I also do the vast majority of my updates on the command line, 100% of the time on my desktop.
Perhaps whatever updates I have had simply haven't invoked perl? This seems unlikely.

[Snowhog]

I’ve never seen this on my neon install. I too, do all my package management and system updates/upgrades from the CLI.

[ShadYoung]

I have it. Seems to default to the correct local anyway, so I just ignore it.

Oh, and it is also present in kubuntu 22.04 LTS

[Schwarzer Kater]

[…] I've done some looking about on the web and attempted all the recommended fixes, but nothing seems to stick. I set the missing locales, but they disappear at each reboot. […]

So you have already set LC_ALL in /etc/default/locale to en_US.UTF-8?

[oshunluvr]

So you have already set LC_ALL in /etc/default/locale to en_US.UTF-8?

Yes, like a billion times, lol. It resets after reboot : see my first post: "I set the missing locales, but they disappear at each reboot."


Turns out I was missing a package for some reason: language-selector-common

I installed that and the issue went away.

[claydoh]

Yes, like a billion times, lol. It resets after reboot : see my first post: "I set the missing locales, but they disappear at each reboot."


Turns out I was missing a package for some reason: language-selector-common

I installed that and the issue went away.

I wonder why I don't see this when I update. I definitely don't have this package on any of my systems. I know a lot of packaging pre- and post- install/remove scripts use perl, so you'd think I'd have seen this by now. I will keep my eye open more, I guess.
I don't have the LC_ALL option even listed in my /etc/default/locale here.

I wonder what is resetting yours to something else?




For rabbit-holing/squirrel-chasing and job-avoidance:

Kubuntu's /etc/default/locale:

# File generated by update-locale
LANG="en_US.UTF-8"​

And on two different Neon systems I have this:

LANG=en_US.UTF-8
LC_ADDRESS=en_US.UTF-8
LC_IDENTIFICATION=en_US.UTF-8
LC_MEASUREMENT=en_US.UTF-8
LC_MONETARY=en_US.UTF-8
LC_NAME=en_US.UTF-8
LC_NUMERIC=en_US.UTF-8
LC_PAPER=en_US.UTF-8
LC_TELEPHONE=en_US.UTF-8
LC_TIME=en_US.UTF-8

I assume the difference being the installers (Ubiquity versus Calamares) probably using different tools, templates or settings defining this.

And of course this probably has no bearing on why you see the error messaging, and others are not

[Snowhog]

I definitely don't have this package on any of my systems.

Same at here on my neon. However, on my 22.10, it is installed.

[Schwarzer Kater]

[…] Turns out I was missing a package for some reason: language-selector-common
I installed that and the issue went away.

I am glad you found a solution. But like in claydoh 's and Snowhog 's it was not installed in my KDE neon system and I have not experienced any problems during the few weeks I have had neon running as a test.

It is installed in all other (xyz)Ubuntu systems here by default.

[…] I don't have the LC_ALL option even listed in my /etc/default/locale here. […]

Nor had I, but I had to set LC_ALL=de_DE.UTF-8 manually in /etc/default/locale for KDE neon - otherwise parts of the GUI would remain English despite the setting in Systemsettings.

[joneall]

I get something similar every time I run a perl script:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US",
LC_ALL = (unset),
LC_ADDRESS = "en_US.UTF-8",
LC_NAME = "en_US.UTF-8",
LC_MONETARY = "en_US.UTF-8",
LC_PAPER = "en_US.UTF-8",
LC_IDENTIFICATION = "en_US.UTF-8",
LC_TELEPHONE = "en_US.UTF-8",
LC_MEASUREMENT = "fr_FR.UTF-8",
LC_TIME = "fr_FR.UTF-8",
LC_NUMERIC = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").

It's true that I have a rather mixed system. I live in France and so want french time, date and paper parameters, for instance. But I want an english keyboard and sytem language. Here's another example.

$ locale
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=en_US.UTF-8
LC_TIME=fr_FR.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=en_US.UTF-8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=en_US.UTF-8
LC_NAME=en_US.UTF-8
LC_ADDRESS=en_US.UTF-8
LC_TELEPHONE=en_US.UTF-8
LC_MEASUREMENT=fr_FR.UTF-8
LC_IDENTIFICATION=en_US.UTF-8
LC_ALL=

Should I set LC_ALL to something somewhere maybe?

[jlittle]

On my 22.10:

$ locale
LANG=en_NZ.UTF-8
LANGUAGE=en_GB:en_US
LC_CTYPE="en_NZ.UTF-8"
LC_NUMERIC="en_NZ.UTF-8"
LC_TIME=en_DK.UTF-8
LC_COLLATE="en_NZ.UTF-8"
LC_MONETARY="en_NZ.UTF-8"
LC_MESSAGES="en_NZ.UTF-8"
LC_PAPER="en_NZ.UTF-8"
LC_NAME="en_NZ.UTF-8"
LC_ADDRESS="en_NZ.UTF-8"
LC_TELEPHONE="en_NZ.UTF-8"
LC_MEASUREMENT="en_NZ.UTF-8"
LC_IDENTIFICATION="en_NZ.UTF-8"
LC_ALL=​

so LC_ALL= is not a problem. askubuntu.com suggests running

sudo dpkg-reconfigure locales

[joneall]

sudo dpkg-reconfigure locales

seems to generate locales, so I've generated en_US and fr_FR, but now how do I use them? My perl script outputs have not changed.