Ok, my issue with Calibre (NOT Ubooquity) was that the covers that appeared to be a negative image were, in fact, derived from CMYK files, not RGB. This is handled perfectly by Ubooquity. Calibre (or whatever library it is using in linux) choked on the creation of the CMYK thumbnail in its web content server. It's a shame, too as the colors are so much more vibrant. In any case, the pretty ones are saved into the epubs themselves. I'm just happy this post got me investigating why they were acting this way. Thanks!

No, my issue is with Calibre only:



Ubooquity is just fine:




I think it is a Calibre thumbnail creation issue. It is such an odd problem I was hoping I might get an idea why it is happening there. Didn't mean to cloud the problem.

That is interesting. I've seen the same problem with covers I have added to epubs displaying like this in my Calibre OPDS pages. And those are jpegs, never saw a rhyme or reason for the ones that displayed this way, but your observation may get me looking closer.

FWIW, I have this same book downloaded from DCM (yours may be a different version) and the cover does not display like this in my Ubooquity instance.

Just a shot in the dark: It appears you have configured a URL rewrite in your IIS setup and have also specified the reverse-proxy path in the Ubooquity. Maybe they are conflicting with each other? You may try removing the reverse-proxy path from the Ubooquity config and see if that helps. When you log in, is the URL path in your browser what you expect to see?

Hey Christophe. I have done this with nginx in the past but only using the Ajenti interface. Here are my notes for using Apache and its proxy modules only to proxy to Ubooquity and Calibre instances. Maybe it will help? Here, I use "/library" as the path for the Ubooquity instance on port 2202.

Hey!  Glad to hear it! 

Hi Zackery, 

I am on Ubuntu Server 14.10.  Here are my notes if they may be any help to you (or anyone else for that matter).  It may not be the most elegant solution, but it is solid enough for me.

Cheers,
Jim

OPDS would be fantastic! Would it also display say, the Calibre metadata of your book library as you browse through it?

Epub reading in Ubooquity would be classy.

Fair enough, great policy as to file handling.

Thanks for the link!  I'll give it a shot.  Sounds like it does a lot of things I need, actually.