Mobileread
PRS-650 New epub makes ereader reboot when selected
#1  mcgarvan 05-12-2020, 12:48 PM
Hi,
I have a sony PRS 650. I recently purchased a book from Kobo, downloaded it as usual and loaded it into calibre with all my other books. When I sent it to my sony and tried reading it, everytime I tried, it rebooted the sony. No problem reading it in the calibre reader.
In the past I have had the occasional problem with my reader with epubs where the blocks of .xhtml text are too large for it to handle. You get it seizing up when reading after a few pages. The solution for that has been to convert the epub file to epub and modify the output so that the blocks of .xhtml text are split so that none are larger than 60kb.
While not exactly the same symptoms I tried that, despite the fact that none of the files in the original epub exceeded the 60kb limit. The only difference it made was that when I selected the book I could see the cover. If I tried moving to the next page then the book went blank and rebooted again.
I have now tried the converted book in a borrowed Nook Glowlight with no problems.
Can anyone suggest another approach or some way of identifying precisely what the problem is?
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#2  sadowski 05-12-2020, 02:21 PM
What you describe has happened occasionally to me as well, sometimes when opening a book and sometimes at specific pages within a book. The problem usually went away when regenerating the EPUB with calibre. I never found out the real cause but calibre does some things to EPUB, including "flattening the CSS".

I have a Sony 350 and I am pretty sure the 650 and the 350 have the same software for reading EPUB, as they came at the same time.

/Jens
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#3  JSWolf 05-12-2020, 02:31 PM
Quote mcgarvan
Hi,
I have a sony PRS 650. I recently purchased a book from Kobo, downloaded it as usual and loaded it into calibre with all my other books. When I sent it to my sony and tried reading it, everytime I tried, it rebooted the sony. No problem reading it in the calibre reader.
In the past I have had the occasional problem with my reader with epubs where the blocks of .xhtml text are too large for it to handle. You get it seizing up when reading after a few pages. The solution for that has been to convert the epub file to epub and modify the output so that the blocks of .xhtml text are split so that none are larger than 60kb.
While not exactly the same symptoms I tried that, despite the fact that none of the files in the original epub exceeded the 60kb limit. The only difference it made was that when I selected the book I could see the cover. If I tried moving to the next page then the book went blank and rebooted again.
I have now tried the converted book in a borrowed Nook Glowlight with no problems.
Can anyone suggest another approach or some way of identifying precisely what the problem is?
What book is it that is causing the problem? Does it have DRM? If so, can you remove the DRM? If it has no DRM, install the ScrambleEbook plugin, scramble it and try it on your 650. If the scrambled eBook still causes a reboot, attach the scrambled eBook to this thread and I can take a look at it.
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