09-10-2024, 01:06 PM | #1 |
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Calibre won't start after update to 7.17
Last night, I updated Calibre to version 7.17 and after that, it's refusing to open.
I am running Fedora 39 (Linux) and all my packages are up to date (I just updated them as well). When I try to start Calibre from the terminal, I get this message: Code:
$ calibre qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile I also tried Code:
$ calibre --ignore-plugins It's been a wonderful piece of software before this though! Thanks for any help. Happy to provide any additional data if you can specify. |
09-10-2024, 09:47 PM | #2 |
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Are you using the official calibre binaries or the fedora package of calibre?
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09-11-2024, 12:03 AM | #3 |
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At a wild eyed guess, I would say he is running the official calibre binaries. My Fedora 39 VM shows 7.13 as the latest calibre version in the repository. Perhaps the QT 6.7.2 and video driver battle continues on their computer?
Edit: I should mention that this was a first install of calibre on the Fedora 39 VM and I needed to install libdeflate ( libdeflate-1.21-2.fc39.x86_64) to allow calibre to finish starting up. Edit 2: Corrected typo in version number. Last edited by DNSB; 09-11-2024 at 12:39 AM. |
09-11-2024, 12:40 AM | #4 |
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Yes currently the Wayland ecosystem is totally broken again for people with some compositors and nvidia cards because of something called explicit sync. @nerdyreader: What compositor are you using and what video card?
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09-11-2024, 12:56 AM | #5 |
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On my Fedora 39 VM, running inxi -Gxx | grep compositor gives me:
compositor: gnome-shell v: 45.9 driver: dri: vmwgfx gpu: vmwgfx |
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09-11-2024, 09:31 PM | #6 |
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cant read epubs after update 7.17
cant read epubs after update 7.17
Just says preparing book for first read ..... windows 10 not had a problem before any ideas before i roll back ? J |
09-11-2024, 09:51 PM | #7 |
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Rolled back all ok v7.17 is broken...
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09-11-2024, 10:06 PM | #8 |
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09-11-2024, 10:36 PM | #9 |
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a graphics card stopping a book reader working would be a first... cant see anyone dashing out for a new gfx card to use calibre.. better to fix the program..
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09-11-2024, 11:55 PM | #10 | |
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Quote:
And sadly, this is not a first. Two ePub renderers I use have been broken by new versions with updated QT versions. Some can be fixed by environmental variables settings to disable using the GPU for instance while others have required major effort to program around QT's "improvements". For one example, my older laptop has dual Intel and NVidia video. So far the Intel video has not broken but the NVidia video has twice required a driver update. Adding a couple of Windows environmental variables has seemed to kept that from happening in the last few updates. I'm not actually certain if the first three items still work to force using opengl and the fourth to disable hardware acceleration. "QT3D_RENDERER", "opengl" "QSG_RHI_BACKEND", "opengl" "QT_OPENGL", "software" "QTWEBENGINE_CHROMIUM_FLAGS", "--disable-gpu" |
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09-12-2024, 02:59 PM | #11 | ||
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Quote:
Quote:
I don't have a separate graphics card, just the built-in graphics on an Intel cpu. I am running Wayland. Thank you for your help. |
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09-12-2024, 03:16 PM | #12 |
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More info that might help narrow it down:
1. I initially only updated Calibre from 7.16 to 7.17. Even without updating anything else, 7.17 would not open. 2. Then I updated other packages but that didn't help. 3. Now I have re-installed 7.16 and it works fine. My guess is that it's not QT because the older Calibre 7.16 works fine with updated everything, while the newer 7.17 doesn't work either before or after other things were updated. |
09-12-2024, 03:20 PM | #13 | |
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09-12-2024, 05:11 PM | #14 | |
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I tried the 'sudo echo "export GSK_RENDERER=gl" > /etc/profile.d/gtk_renderer.sh' command and it added an option in the bottom of the login screen to select some video options. Selecting Plasma with X11 ran the viewer without issue. |
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09-13-2024, 01:26 PM | #15 | |
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Quote:
Do you mean that the QT version used by Calibre changed between 7.16 and 7.17? |
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