Hi Peter,
I cannot find the error message from the service again, sorry, so I cannot tell You, it had to do with some security parameter not set.
It might be in journalctl(1)'s output.
Sorry, cannot find that. :-/
You have no `journalctl' command, or using it doesn't help find the error message? `journalctl -S 2018-07-20' would show all messages starting from that date, for example. https://wiki.archlinux.org/index.php/Systemd#Journal
If your cache no longer has old packages, you can use the online Archive. https://wiki.archlinux.org/index.php/Downgrading_packages#Arch_Linux_Archive
Thank You, Ralph! I now wonder where the linux-headers are cached
It's a cache so they don't have to still exist in there, especially if you've done something to clean it at some point. See when you had dealings with that package with `grep linux-headers /var/log/pacman.log'.
they're not in /var/cache/pacman/pkg
Are there any other `CacheDir' configured in /etc/pacman.conf ?
Are these headers used for compilation of modules only, or do they add some more value to the running linux system, too?
Just the former, I think, but could be wrong. https://wiki.archlinux.org/index.php/Compile_kernel_module I've never had it installed, but then I haven't built a kernel module on this system, nor do I have https://wiki.archlinux.org/index.php/Dynamic_Kernel_Module_Support -- Cheers, Ralph. https://plus.google.com/+RalphCorderoy