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#31 |
Resident Curmudgeon
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Karma: 146391129
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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I suggest loading this ePub into Calibre's editor and using Calibre's error checker and epubcheck to check for errors and if there are any, fix them and then try again.
I have never had my Kobo tell me an ePub has DRM when it doesn't. |
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#32 |
Zealot
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Join Date: Sep 2016
Device: Kobo Sage, Kobo Aura One, Nook Simple Touch, Nook Glowlight,
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Most of the times this happens to me it says _all_ sideloaded epubs (well all the ones I check) are drm protected. Reboot fixes it. The most recent incident is the first time I recall seeing it claim just one file was. And "most of the times" is... you know... an average of about once a year? So it's a bit vexing but not a huge problem. It would be nice for it to stop happening, clearly,
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#33 |
Bibliophagist
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Karma: 169098402
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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Been there, done that. It seems to have nothing to do with any errors in the epub. Once the error occurs, even a test epub that simply displays an SVG cover page comes up with the DRM error even though there is no encryption.xml file in the epub container.
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#34 |
Resident Curmudgeon
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Karma: 146391129
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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I wonder what causes this DRM error. I suggest having a look at these ePub and see what might be at fault. Does it happen if the cover is not using an SVG container?
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#35 |
Still reading
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper
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It seems random:
1t's very rare vs hours of reading dozens of books The SAME book with no change worked OK after a reboot. I have had malformed books refuse to go past a a particular page or seem to freeze the GUI, but not cause this error. No ebook will once it happens, or I think so. But it's very rare. |
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#36 | |
Bibliophagist
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Karma: 169098402
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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Quote:
When experimenting with this, I played with the rights.xml and encryption.xml files and while modifying rights.xml made it easy to get the DRM popup, the flag was cleared when I opened another epub and it would open without the error. It appears that when the flag is set in error, a restart is needed to clear the flag. |
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#37 | |
Resident Curmudgeon
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Karma: 146391129
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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Quote:
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#38 |
BLAM!
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Karma: 26047202
Join Date: Jun 2010
Location: Paris, France
Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E
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No, it's a Nickel (or nickel-adjacent, at least, e.g., RMSDK) bug, the actual state of the files, filesystem, or Nickel db has zero bearings on it.
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#39 |
Bibliophagist
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Karma: 169098402
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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I would disagree with the issue being a corrupted file. The more likely explanation to me is that if the flag (likely a single bit) gets set when an invalid rights.xml file is detected in normal operation, Nickel/RMSDK are aware that it has been set and clear it before opening the next book. If the flag is set due to a bug/error, it is not cleared and will remain set until memory is cleared during the restart.
I added a DRMmed epub to my Sage and am going to try opening it on the next occurrence to see if that will clear the flag. Unfortunately, it's been a couple of months and still hasn't happened. |
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