I had a working system on Pogoplug v4 from 2016 that I did not upgrade for 4 years. So yesterday, I took it out of storage since I was in need of another NAS. Everything was working fine, but I decided to upgrade ARCH Linux by
"pacman -Syu" command. I answered yes to all default questions, but I get the following error. I did try a lot of suggestions from this newsgroup, but none of them worked. In fact, after failed upgrade, I am having a lot of trouble with existing system, looks like something broke. I can no longer mount other usb hard disks. Anyway, here is the error. Is there anyway to fix this broken system. I have left it on network, so I can still ssh into it.
$ sudo pacman -Syu
[sudo] password for xxxxx:
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
alarm is up to date
aur is up to date
:: Starting full system upgrade...
:: Replace ca-certificates-cacert with core/ca-certificates? [Y/n]
:: Replace damageproto with extra/xorgproto? [Y/n]
:: Replace eventlog with extra/syslog-ng? [Y/n]
:: Replace fixesproto with extra/xorgproto? [Y/n]
:: Replace fuse with extra/fuse2? [Y/n]
:: Replace inputproto with extra/xorgproto? [Y/n]
:: Replace kbproto with extra/xorgproto? [Y/n]
:: Replace libdbus with core/dbus? [Y/n]
:: Replace libmariadbclient with extra/mariadb-libs? [Y/n]
:: Replace libsystemd with core/systemd-libs? [Y/n]
:: Replace libx264 with extra/x264? [Y/n]
:: Replace mesa-libgl with extra/mesa? [Y/n]
:: Replace pkg-config with core/pkgconf? [Y/n]
:: Replace recordproto with extra/xorgproto? [Y/n]
:: Replace renderproto with extra/xorgproto? [Y/n]
:: Replace xextproto with extra/xorgproto? [Y/n]
:: Replace xf86vidmodeproto with extra/xorgproto? [Y/n]
:: Replace xproto with extra/xorgproto? [Y/n]
resolving dependencies...
looking for conflicting packages...
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
:: ca-certificates and ca-certificates-cacert are in conflict (ca-certificates-cacert<=20140824-4)