Error cailbre 8.11.1 calibre-debug --gui Mint 22.2

[gbm]

$ calibre-debug --gui
calibre 8.11.1  embedded-python: True
Linux-6.14.0-32-generic-x86_64-with-glibc2.39 Linux ('64bit', 'ELF')
('Linux', '6.14.0-32-generic', '#32~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Sep  2 14:21:04 UTC 2')
Python 3.11.13
Interface language: None
EXE path: /opt/calibre/bin/calibre-debug
Successfully initialized third party plugins: ACSM Input (0, 1, 0) && Gather KFX-ZIP (from KFX Input) (2, 26, 2) && DeDRM (10, 0, 9) && Package KFX (from KFX Input) (2, 26, 2) && ACSM Input Plugin GUI Extension (0, 1, 0) && Baen (1, 1, 0) && Barnes & Noble (1, 5, 7) && Diaps Editing Toolbag (0, 5, 0) && EpubMerge (3, 2, 0) && EpubSplit (3, 12, 0) && Goodreads (1, 8, 3) && Hyphenate This! (0, 1, 3) && KFX metadata reader (from KFX Input) (2, 26, 2) && From KFX (2, 26, 2) && KFX Input (2, 26, 2) && KindleUnpack - The Plugin (0, 83, 8) && Kobo Utilities (2, 24, 3) && Modify ePub (1, 8, 6) && Quality Check (1, 14, 2)
QPA platform: xcb
devicePixelRatio: 1.09375
logicalDpi: 96.0 x 96.0
physicalDpi: 84.58633776091081 x 84.69527027027027
ApplicationPaletteChange event ignored
Using calibre Qt style: True
Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 47, in <module>
  File "site.py", line 43, in main
  File "calibre/debug.py", line 234, in main
  File "calibre/gui_launch.py", line 74, in calibre
  File "calibre/gui2/main.py", line 548, in main
  File "calibre/gui2/main.py", line 560, in run_main
  File "calibre/gui2/main.py", line 398, in run_gui
  File "calibre/gui2/main.py", line 408, in run_gui_
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/ui.py", line 51, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/init.py", line 37, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/library/alternate_views.py", line 67, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/pin_columns.py", line 9, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/library/delegates.py", line 46, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/dialogs/comments_dialog.py", line 11, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre/gui2/comments_editor.py", line 14, in <module>
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "html5_parser/__init__.py", line 31, in <module>
RuntimeError: html5-parser and lxml are using different versions of libxml2. This happens commonly when using pip installed versions of lxml. Use pip install --no-binary lxml lxml instead. libxml2 versions: html5-parser: (2, 9, 14) != lxml: (2, 15, 0)

Only happens when try to run in debug.

bernie

[kovidgoyal]

Doesn't reproduce for me. Are the env vars the same when you run calibre and calibre-debug --gui?

[gbm]

This is a fresh install of Linux Mint 22.2 on a new disk. Calibre also does not start when using "Restart in debug mode".

Did a calibre-uninstall then a clean install of 8.11.1 same result.

Reverted to 8.10 calibre-debug works.

$ calibre-debug --gui
calibre 8.10  embedded-python: True
Linux-6.14.0-32-generic-x86_64-with-glibc2.39 Linux ('64bit', 'ELF')
('Linux', '6.14.0-32-generic', '#32~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Sep  2 14:21:04 UTC 2')
Python 3.11.12
Interface language: None
EXE path: /opt/calibre/bin/calibre-debug
Successfully initialized third party plugins: ACSM Input (0, 1, 0) && Gather KFX-ZIP (from KFX Input) (2, 26, 2) && DeDRM (10, 0, 9) && Package KFX (from KFX Input) (2, 26, 2) && ACSM Input Plugin GUI Extension (0, 1, 0) && Baen (1, 1, 0) && Barnes & Noble (1, 5, 7) && Diaps Editing Toolbag (0, 5, 0) && EpubMerge (3, 2, 0) && EpubSplit (3, 12, 0) && Goodreads (1, 8, 3) && Hyphenate This! (0, 1, 3) && KFX metadata reader (from KFX Input) (2, 26, 2) && From KFX (2, 26, 2) && KFX Input (2, 26, 2) && KindleUnpack - The Plugin (0, 83, 8) && Kobo Utilities (2, 24, 3) && Modify ePub (1, 8, 6) && Quality Check (1, 14, 2)
QPA platform: xcb
devicePixelRatio: 1.09375
logicalDpi: 96.0 x 96.0
physicalDpi: 84.58633776091081 x 84.69527027027027
ApplicationPaletteChange event ignored
Using calibre Qt style: True
[0.00] Starting up...
Spoiler: 

[0.00] Showing splash screen...
[1.08] splash screen shown
[1.08] Initializing db...
[1.21] db initialized
[1.21] Constructing main UI...
[1.89] [DEBUG] [koboutilities.config:<module>:75] CreateNewCustomColumn is supported
ACSM Input: GUI Plugin Genesis!
qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
[2.10] [DEBUG] [koboutilities.action:KoboUtilitiesAction.genesis:121] Running in optimized mode
qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
[2.63] GUI main window shown
EpubMerge: DEBUG: 2025-09-27 14:20:43,433: calibre_plugins.epubmerge.epubmerge_plugin(156): macmenuhack file_path:/home/gbmoore/.config/calibre/plugins/fanficfare_macmenuhack.txt
[2.67] [DEBUG] [koboutilities.config:get_library_config:638] library_config: {'SchemaVersion': 1,
 'profiles': {'Default': {'customColumnOptions': {'currentReadingLocationColumn': '#folder',
                                                  'lastReadColumn': '',
                                                  'percentReadColumn': '',
                                                  'ratingColumn': 'rating',
                                                  'restOfBookEstimateColumn': '',
                                                  'timeSpentReadingColumn': ''},
                          'forDevice': None,
                          'profileName': 'Default',
                          'storeOptionsStore': {'doNotStoreIfReopened': False,
                                                'promptToStore': True,
                                                'storeIfMoreRecent': False,
                                                'storeOnConnect': False},
                          'updateOptionsStore': {'doEarlyFirmwareUpdate': False,
                                                 'doFirmwareUpdateCheck': False,
                                                 'firmwareUpdateCheckLastTime': 0}}},
 'readingPositionChangesStore': {'selectBooksInLibrary': False,
                                 'updeateGoodreadsProgress': False},
 'shelvesColumn': None}
[2.67] [DEBUG] [koboutilities.action:KoboUtilitiesAction.device_driver_name:759] could not load extended driver. Exception= No module named 'calibre_plugins.kobotouch_extended'
[2.67] [DEBUG] [koboutilities.action:KoboUtilitiesAction.set_toolbar_button_tooltip:181] setting to text='Utilities to use with Kobo ereaders

Driver: KoboTouch'
[2.76] main UI initialized...
[2.76] Hiding splash screen
[2.76] splash screen hidden
[2.76] Started up in 2.76 seconds with 1318 books

Originally Posted by kovidgoyal

Doesn't reproduce for me. Are the env vars the same when you run calibre and calibre-debug --gui?

[kovidgoyal]

Strange, dont see how that's possible. Try

LD_DEBUG=libs ./calibre-debug -g 2>&1 | grep libxml2

and post the output.

[gbm]

Got a head of myself.

RuntimeError: html5-parser and lxml are using different versions of libxml2. This happens commonly when using pip installed versions of lxml. Use pip install --no-binary lxml lxml instead. libxml2 versions: html5-parser: (2, 9, 14) != lxml: (2, 15, 0)

bernie

Originally Posted by kovidgoyal

Strange, dont see how that's possible. Try

LD_DEBUG=libs ./calibre-debug -g 2>&1 | grep libxml2

and post the output.

[kovidgoyal]

Yeah I want the output from LD_DEBUG, that message doesnt tell me where the older libxml2 is coming from

[gbm]

It did not print any out put but I do have:

libxml2.so.2.9.14 /lib/x86_64-linux-gnu

libxml2.so.2.13.8 /var/lib/flatpak/runtime/org.freedesktop.Platform/x86_64/24.08/e2cda5d7700bf0f02c764e151918a6e93def2634e8df9dc0dec52c4a1923ef88/files/lib/x86_64-linux-gnu

libxml2.so.2.13.8 /var/lib/flatpak/runtime/org.kde.Platform/x86_64/5.15-24.08/79fbdb22e166f20c4ca1f6639415d8dac00cfe64b07ab18d0f5a875c73942225/files/lib/x86_64-linux-gnu

bernie

Going to bed.
8.11.1 works except for debug gui.

Originally Posted by kovidgoyal

Yeah I want the output from LD_DEBUG, that message doesnt tell me where the older libxml2 is coming from

[kovidgoyal]

And what does

ldd ./lib/calibre-extensions/html5_parser.html_parser.so

output?

[kovidgoyal]

I tried this in a debian:stable container which has libxml2.so.2.19.4 and couldnt reproduce there either.

[gbm]

8.10.0

LD_DEBUG=libs ./calibre-debug -g 2>&1 | grep libxml2 grep libxml2 
grep: grep: No such file or directory
grep: libxml2: No such file or directory

ldd: ./lib/calibre-extensions/html5_parser.html_parser.so: No such file or directory

8.11.1

LD_DEBUG=libs ./calibre-debug -g 2>&1 | grep libxml2 grep libxml2 
grep: grep: No such file or directory
grep: libxml2: No such file or directory

ldd: ./lib/calibre-extensions/html5_parser.html_parser.so: No such file or directory

I get the same result with my old system disk. 8.10.0 calibre debug works 8.11.1 calibre debug does not work.

bernie

Originally Posted by kovidgoyal

And what does

ldd ./lib/calibre-extensions/html5_parser.html_parser.so

output?

[gbm]

Ok installed calibre 8 on a Mint 22.2 live usb and calibre debug worked.

Will install on different disk or vm and test without and with the flatpacks I use. Will be tomorrow or Tuesday.

bernie

[kovidgoyal]

You need just grep libxml2 not grep libxml2 grep libxml

And run the ldd comman inside the calibre installation dir, typically /opt/calibre