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Originally Posted by Thane1
Ah, I think you found my problem or a least part of it. 
Turns out I had 16 pages of shelves, all duplicates (or triplicate/quads) of the same shelves. I could not delete them from either of my readers so I had to find and use a database editor to dislodge them with the help of calibre and the extended Kobo Driver; I figured if I hosed the database so be it, a reset will fix that and the usage data isn't critical to me anyways. A bit of experimentation, many synchs, a few factory resets and now they are gone. |
Good to hear my guess was right
And good to hear you worked out how to clean them up. I wrote a post a few weeks ago with instructions on how to clean up the duplicates with calibre or by directly editing the database. Plus a sync or two. I just looked at my shelves and it seems I need to find the post
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The really odd thing was that after I deleted every book (all epubs) from my device, some of the shelves still indicated books present. In all cases the books (not present on the device, never downloaded either, nor previewed) were all kepubs with the buy it now option. Weird stuff.
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That has been reported before. I think there has been a couple of different causes. One way was a bug in the driver in calibre that added recommendations to the shelves. I fixed that a while ago.
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According to Calibre I have 18 bookshelves based on subject; do you think that is too many?
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Personally, I normally have about three pages of shelves. That seems to work well. Recently, I have had a lot more to do some testing and haven't noticed any issues. But, this is with later firmware and beta firmware, so maybe things have been fixed.
If you don't want to sync shelves to Kobo, you can add a line to the "Kobo eReader.conf" on the device. In the "ApplicationPreferences" section, add "SyncShelves=false".