#reinob wrote:beardedragon wrote:[Before]
You might want to post your sources.list, unless your intention is to play riddles.
Please note that buster has (will have) kernel 4.19
(and currently xfce4 4.12.5, not 4.12.4 as you have).
# deb cdrom:[Debian GNU/Linux testing _Buster_ - Official Snapshot amd64 xfce-CD Binary-1 20190513-03:58]/ buster main
# deb cdrom:[Debian GNU/Linux testing _Buster_ - Official Snapshot amd64 xfce-CD Binary-1 20190513-03:58]/ buster main
deb http://deb.debian.org/debian/ buster main contrib non-free
deb-src http://deb.debian.org/debian/ buster main contrib non-free
deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb-src http://security.debian.org/debian-security buster/updates main contrib non-free
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
deb http://ftp.debian.org/debian stretch-backports main contrib non-free
# deb-src http://ftp.debian.org/debian stretch-backports main contrib non-free
deb http://ftp.de.debian.org/debian sid main non-free