Edit Book black screen, not functioning (Calibre 6.26 on MacOS 12.6)

lilycat · 09-10-2023, 10:44 PM

Hi, I was in the middle of editing an epub in Calibre when it crashed while I was searching/replacing a regex. After it crashed I restarted Calibre and now when I try and edit an epub, the "ebook-edit" screen launches, but it's just a black screen and I can't interact with it at all.

I tried reinstalling Calibre to see if this would solve the issue, I also tried deleting the tweak_book_gui.json file , but neither helped. Please let me know if there's a way to fix this, I edit epubs very frequently on Calibre and not having this functionality is a big loss

I am running Calibre 6.26 and on MacOS Monterey 12.6.

kovidgoyal · 09-11-2023, 10:25 PM

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"

09-10-2023, 10:44 PM	#1
lilycat Junior Member Posts: 1 Karma: 10 Join Date: Sep 2023 Device: Kindle	Edit Book black screen, not functioning (Calibre 6.26 on MacOS 12.6) Hi, I was in the middle of editing an epub in Calibre when it crashed while I was searching/replacing a regex. After it crashed I restarted Calibre and now when I try and edit an epub, the "ebook-edit" screen launches, but it's just a black screen and I can't interact with it at all. I tried reinstalling Calibre to see if this would solve the issue, I also tried deleting the tweak_book_gui.json file , but neither helped. Please let me know if there's a way to fix this, I edit epubs very frequently on Calibre and not having this functionality is a big loss I am running Calibre 6.26 and on MacOS Monterey 12.6.

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09-11-2023, 10:25 PM	#2
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 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"