Also check ls -ld / to view the permissions of / itself. Sounds like whatever happened to boot also happened to the root. A quick chown root:root / should make dbus happy. Don't recursively chown or chmod the root partition, that can result in a worse situation. Hopefully only / and /boot were affected.
Yes I only created / and /boot from the Mint live boot
Do I need to run another chown for the boot partition? If so is chown root:root /boot the correct command?
Update: chowning didn't fix dbus failing
Update 2: the warnings did go away though
Update 3: the dbus errors did change
Update 4: I think my / and /boot permissions are messed up to, they are drwx-----
Yes I only created / and /boot from the Mint live boot
So that's why the wrong IDs came from. Technically the filesystem doesn't know about names, it knows about IDs, and software just look at /etc/passwd and /etc/groups to go ID<>name.
/ should be 0755 (drwxr-xr-x). Boot, you can chown it all to root and 0755 for directories and 0644 for files safely. The reason you can't for the root is, you'll likely break executable state or SUID bits that sudo needs to be sudo.
you can chown it all
The permissions inside the partition were set correctly, it was only the "root" of the partition that went off, I only created the partition using Mint, while Arch did the whole installation and wrote all the files
Either way I chown both / and /boot to root:root and chmod both / and /boot to 0755 (looked these up from my other Arch machine) and the bugs are gone
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