Failed to read book

[gricoo2017]

Hi guys,
I admit I am a noob, please be gentle.
I am using lastest calibre on a ubuntu 17.10. machine.
My problem is I can not open e-books with pdf extension. epub&mobi etc. is no problem.

I am getting following Error:
Traceback (most recent call last):
File "site-packages/calibre/utils/ipc/simple_worker.py", line 284, in main
File "site-packages/calibre/ebooks/oeb/iterator/book.py", line 54, in extract_book
File "site-packages/calibre/ebooks/conversion/plumber.py", line 720, in __init__
ValueError: Input file must have an extension

Any guidance most appreciated.
Cheers grico

[theducks]

can you open the same file DIRECTLY with your installed PDF viewer?

[gricoo2017]

Thank you for quick answer. I did not try. All I remember is a error message stating PDF file is in a /tmp/xs455 directory. As soon I am back on my original machine I will try to open it from my original PDF-viewer, not via calibre.

[gricoo2017]

Originally Posted by theducks

can you open the same file DIRECTLY with your installed PDF viewer?

Update: I tried to open same file (it is pointing to a /tmp/xxxx directory), but it did not work. Any ideas?

[BetterRed]

Originally Posted by gricoo2017

Update: I tried to open same file (it is pointing to a /tmp/xxxx directory), but it did not work. Any ideas?

It's probably an incomplete download, or similar - or something worse.

BR

[gricoo2017]

Originally Posted by BetterRed

It's probably an incomplete download, or similar - or something worse.

BR

Well it looks like my system thinks calibre is my standard pdf-viewer. I changed it to evince with this command:

$ xdg-mime default evince.desktop application/pdf

Now I am trying to restore database, maybe that helps. Thank you for your support.

[gricoo2017]

I did a bit more research: I am using ubuntu 17.10 and it looks like there is an issue mit gnome and calibre.
https://answers.launchpad.net/ubuntu/+question/657143v

[BetterRed]

Originally Posted by gricoo2017

Well it looks like my system thinks calibre is my standard pdf-viewer.

Something must have told your system to use calibre as the default handler for PDF files, not even Ubuntu thinks for itself

Originally Posted by gricoo2017

Now I am trying to restore database, maybe that helps. Thank you for your support.

That won't overcome the 'problem'

if Preferences>Behaviour->Use internal viewer for->PDF is unchecked then calibre should start the default handler (evince) when you view a PDF.

BR

[BetterRed]

Originally Posted by gricoo2017

I did a bit more research: I am using ubuntu 17.10 and it looks like there is an issue mit gnome and calibre.
https://answers.launchpad.net/ubuntu/+question/657143v

For reasons not obvious to me I can't access that link, says page not found, even though I'm logged in there. Are you sure that URL is complete ?

BR

[PeterT]

Try https://answers.launchpad.net/ubuntu/+question/657143

Sent from my Nexus 7 using Tapatalk

[gricoo2017]

Originally Posted by BetterRed

Something must have told your system to use calibre as the default handler for PDF files, not even Ubuntu thinks for itself


That won't overcome the 'problem'

if Preferences>Behaviour->Use internal viewer for->PDF is unchecked then calibre should start the default handler (evince) when you view a PDF.

BR

Sorry for the broken link. Your advice does not work for me. Calibre does not start the default handler when you view a PDF, instead it opens E-book viewer.
And yes you are right, restoring database did not help.
But i think we can close this thread, because it is clearly a ubuntu 17.10. Artful Aardvark (development branch) problem, demonstrated in the already well known link:
https://answers.launchpad.net/ubuntu/+question/657143. Thanks for your help guys.