On Fri, May 03, 2024 at 11:58:57PM +0200, Riccardo Mottola wrote: > no hint for me which key to use? or if I miss one, where to get it? > > I have apt-get working, so I think I have the key. You looking for the key to install a chroot with powerpc or ppc64 from debian-ports? Assuming you have debian-ports-archive-keyring package installed then you will find it in the directory: /etc/apt/trusted.gpg.d/ Cheers Michael.