Gaetan Bisson wrote: Upstream improvements in screen-4.2.1 will make users unable to reattach instances created with version 4.2.0 or older. Please upgrade to screen-4.2.1-2 only when they are unneeded. Apologies again for the inconvenience. URL: https://www.archlinux.org/news/screen-421-cannot-reattach-older-instances-ei...