I’m trying to find a cure. I have now added the IP address to /etc/hosts, so that i do not get the “not found”.
The basic problem is, that i have Ubuntu 20.04.1 LTS, codename “focal”. The list of supported versions contains:
| artful/ | 2018-07-19 21:28 | - | ||
|---|---|---|---|---|
| bionic/ | 2020-07-05 10:26 | - | ||
| devel/ | 2020-03-18 02:49 | - | ||
| disco/ | 2020-03-18 02:49 | - | ||
| oneiric/ | 2013-02-18 04:58 | - | ||
| precise/ | 2013-02-17 04:03 | - | ||
| quantal/ | 2013-02-18 04:58 | - | ||
| raring/ | 2013-02-18 04:58 | - | ||
| saucy/ | 2013-09-08 00:18 | - | ||
| trusty/ | 2020-07-05 10:26 | - | ||
| utopic/ | 2014-06-22 15:39 | - | ||
| vivid/ | 2017-10-11 15:52 | - | ||
| wily/ | 2016-12-12 01:36 | - | ||
| xenial/ | 2020-07-05 10:26 | - | ||
| yakkety/ | 2017-07-19 22:01 | - | ||
| zesty/ | 2018-01-14 21:30 | - |
There is no focal. So as a result there is no “Release” file. So for security reasons apt blocks downloading from this repository. I do not know all the code names, but i think there is no ppa for the current ubuntu version, only for older versions.
An alternative would be offering a .deb file to download and then install manually. But i have not yet found such a .deb file.
Ok, i found the .deb files. But they depend on some libs i don’t have and which are not available. Mostly older versions of ffmpeg libs.