I am running leap 42.1 and recently something changed in dolphin. I used to use ctrl F to search for files. When I do this now, the search box comes up, but yields no results. Can anyone help to get this working again?
This search uses baloo’s index for folders that are configured to be indexed.
If the index is broken somehow (or incomplete/empty), it won’t find anything.
So, turn off the file indexer and it should work (but will be slower).
Or try to delete the folder ~/.local/share/baloo/ to force a reindex. Should help too, unless the indexer is getting stuck on some file…
Or just use the old and venerable kfind to search for files… 
It’s not integrated in dolphin though, only in Konqueror. But you can use it “stand-alone” too.
That is working ok on local machine (after deleting baloo in .local/share folder.)
It still does not work on a server that I connect to on ethernet. Is there a way of expanding baloo to the server?
What do you mean with that?
Are you running dolphin on the server?
Or are you accessing files/folders on the server, via SMB, NFS, or whatever? How exactly, e.g. are the shares mounted (and where), or are you using smb:/ URLs or similar?
It is a shared folder /mnt/Documents and I think using CIFS as we have some windows machines using the same server. Previously (a couple of months ago) I was able to search that folder using ctrl f . It worked very efficiently.
In the search settings I found that this folder was excluded, and I removed the exclusion, but this did not help.
It should work then, I just gave it a quick try and it does here.
Are you using content search or filename search?
Are you actually in that folder when you use the search? What are the search settings, i.e. “Start here (mnt)” or “Everywhere”?
And does it work if you disable the indexer completely?
In the search settings I found that this folder was excluded, and I removed the exclusion, but this did not help.
You need to wait until it is actually indexed, which could take a while.
But if it is excluded, it should work anyway.