Unable to open or edit ANY of the books in my calibre library

evilmrb · 10-06-2022, 03:45 AM

I recently rebuilt my PC from scratch using Linux Mint 21. I'd taken a backup of my home folder from the previous Mint 20.3 which I restored on completion. I have since upgraded calibre to 6.6.1. Despite my best efforts I am unable to open or edit ANY of the 140+ books in my calibre library.

theducks · 10-06-2022, 08:08 AM

Does Calibre Start?

Was the backup on CD/DVD? That make the restore READ ONLY. Use CHMOD to change it back to RWX (at least for the user)R--R--

evilmrb · 10-07-2022, 04:11 AM

Quote:

Originally Posted by theducks

Does Calibre Start?

Was the backup on CD/DVD? That make the restore READ ONLY. Use CHMOD to change it back to RWX (at least for the user)R--R--

The backup was saved to a NAS using a Grsync job. When I changed permissions to allow read, write and execute to everyone, it still gives the same problem. It sticks on "Loading book, Please Wait". Doing a "Force Quit" is the only way to get out of it.

kovidgoyal · 10-07-2022, 06:17 AM

The viewer/editor not working are always GPU driver issues. Try updating your GPU drivers or turn off hardware acceleration as descibed here: https://doc.qt.io/qt-6/qtwebengine-debugging.html

evilmrb · 10-07-2022, 06:33 AM

Kovid,
Thank you for your reply. Not being a software developer, I cannot understand the instructions in the link you gave me. Sorry!
I bet you have had a lot of stick over that past 2 years during the pandemic with your name, right?

kovidgoyal · 10-07-2022, 07:56 AM

This is caused by incompatibilities between Qt WebEngine (used by the viewer and editor) and the graphics drivers
on your system. Try updating the graphics drivers, if that does not work, you can try disabling hardware acceleration
by setting the environment variable QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

10-06-2022, 03:45 AM	#1
evilmrb Junior Member Posts: 3 Karma: 10 Join Date: Oct 2022 Device: None	Unable to open or edit ANY of the books in my calibre library I recently rebuilt my PC from scratch using Linux Mint 21. I'd taken a backup of my home folder from the previous Mint 20.3 which I restored on completion. I have since upgraded calibre to 6.6.1. Despite my best efforts I am unable to open or edit ANY of the 140+ books in my calibre library.

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10-06-2022, 08:08 AM	#2
theducks Well trained by Cats Posts: 31,047 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Does Calibre Start? Was the backup on CD/DVD? That make the restore READ ONLY. Use CHMOD to change it back to RWX (at least for the user)R--R--

10-07-2022, 06:17 AM	#4
kovidgoyal creator of calibre Posts: 45,345 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The viewer/editor not working are always GPU driver issues. Try updating your GPU drivers or turn off hardware acceleration as descibed here: https://doc.qt.io/qt-6/qtwebengine-debugging.html

10-07-2022, 06:33 AM	#5
evilmrb Junior Member Posts: 3 Karma: 10 Join Date: Oct 2022 Device: None	Kovid, Thank you for your reply. Not being a software developer, I cannot understand the instructions in the link you gave me. Sorry! I bet you have had a lot of stick over that past 2 years during the pandemic with your name, right?

10-07-2022, 07:56 AM	#6
kovidgoyal creator of calibre Posts: 45,345 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	This is caused by incompatibilities between Qt WebEngine (used by the viewer and editor) and the graphics drivers on your system. Try updating the graphics drivers, if that does not work, you can try disabling hardware acceleration by setting the environment variable QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

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