Bug#868695: systemd: leaves empty LC_CTYPE what breaks X11 ssh password prompt

[Robert Luberda]

Michael Biebl writes:

Hi,

Sorry for not replying for your previous e-mails, I was too tired
yesterday after work, and planned to do this today, but probably it
doesn't make sense anymore as you've found the commit that caused the
issue. Anyway I was pretty sure that the LC_CTYPE settings are
relevant, because before reporting the bug I tried to comment them
out, what fixed the problem. But than I noticed that those settings
were present also in the previous version, but unfortunately missed
the difference in the Exec line of getty at .service, so I thought that
some change in systemd internals prevented it from clearing the
environment :(

> Am 17.07.2017 um 20:54 schrieb Robert Luberda:
>> Yes, LC_CTYPE and other LC_ variables are empty, because they are
>> set like this in /lib/systemd/system/getty at .service.
> 
> Afaics, this was broken by 
> https://github.com/systemd/systemd/pull/6023
> 
> Robert, can you try reverting the commit 
> https://github.com/systemd/systemd/commit/db6aedab9292678918f15807a0d835be35511667
>
>  and report back.

I've just replaced the getty at .service file with the version coming
from systemd 233-10, and yes, I confirm that doing this followed by
rebooting the system fixed the bug: LC_CTYPE is unset, and ssh client
shows the X11 gui prompt.

> I've created an upstream bug report in the mean time at 
> https://github.com/systemd/systemd/issues/6407
> 

Oh, I've just checked that according to
https://codesearch.debian.net/search?q=OPTION+lc-ctype
the empty LC_CTYPE might break a few other packages: kwalletcli,
scoute, and nss-passwords as well.


Thanks a lot,
robert