difficulties with ppa.launchpad.net/lyx-devel/release/ubuntu eoan

[Wolfgang Engelmann]

Am 23.10.19 um 09:57 schrieb Wolfgang Engelmann:
> Hello,
>
> I got this error
>
> sudo dpkg --configure -a
> dpkg: Fehler: dpkg frontend lock ist von einem anderen Prozess gesperrt
>
> and the following command points to the 
> ppa.launchpad.net/lyx-devel/release/ubuntu eoan
>
> should I remove it from the sources.list (and if needed replace it by 
> something better)? Wolfgang
>
> $ sudo rm /var/lib/apt/lists/lock
> wolfgang at Fuji:~/Schreibtisch/CV-we$ LC_ALL=C sudo apt update
> Hit:1 http://security.debian.org/debian-security buster/updates InRelease
> Ign:2 http://ppa.launchpad.net/lyx-devel/release/ubuntu eoan InRelease
> Hit:3 http://ftp.de.debian.org/debian buster InRelease
> Hit:4 http://ftp.de.debian.org/debian buster-updates InRelease
> Err:5 http://ppa.launchpad.net/lyx-devel/release/ubuntu eoan Release
>   404  Not Found [IP: 91.189.95.83 80]
> Hit:6 http://ftp.de.debian.org/debian sid InRelease
> Reading package lists... Done
> E: The repository 'http://ppa.launchpad.net/lyx-devel/release/ubuntu 
> eoan Release' does not have a Release file.
> N: Updating from such a repository can't be done securely, and is 
> therefore disabled by default.
> N: See apt-secure(8) manpage for repository creation and user 
> configuration details.
>
Forgot I am under Debian buster. I have commented out the 
ppa.launchpad.net/lyx-devel/release/ubuntu eoan in sources.list.d and 
the update is now going on. Just curious whether I should avoid in the 
future using this ppa or whether the address has changed.

Wolfgang