[gbm]

See if calibre will start with plugins disabled, in a terminal type:

calibre --ignore-plugins

If it starts them go to preferences-plugins
then click Show only user installed plugin then disable DeDRM and Goodreads More Tags plugin's.

Then try to start calibre
bernie

Originally Posted by lewisdale

I attempted an install of calibre 6 on a raspberry pi 4 2GB of ram. If failed. I ran a debu and it seems to not like many of my plugins that were installed with the previous 5.12.0 version through apt. The output of the debug script is below.

Spoiler:

calibre-debug -g
calibre 6.1 embedded-python: True
Linux-5.15.32-v8+-aarch64-with-glibc2.31 Linux ('64bit', 'ELF')
('Linux', '5.15.32-v8+', '#1538 SMP PREEMPT Thu Mar 31 19:40:39 BST 2022')
Python 3.10.1
Interface language: None
Failed to import PyQt module: PyQt6.QtWidgets with error: libOpenGL.so.0: cannot open shared object file: No such file or directory
Failed to initialize plugin: '/home/pi/.config/calibre/plugins/DeDRM.zip'
Traceback (most recent call last):
File "calibre/customize/ui.py", line 744, in initialize_plugins
File "calibre/customize/ui.py", line 64, in load_plugin
File "calibre/customize/zipplugin.py", line 304, in load
File "importlib/__init__.py", line 126, in import_module
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "calibre/customize/zipplugin.py", line 203, in exec_module
File "calibre_plugins.dedrm.__init__", line 103, in <module>
from calibre.gui2 import is_ok_to_use_qt
File "bypy-importer.py", line 279, in exec_module
File "calibre/gui2/__init__.py", line 13, in <module>
ImportError: cannot import name 'QApplication' from 'qt.core' (/usr/lib/calibre/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/core.pyc)
Failed to initialize plugin: '/home/pi/.config/calibre/plugins/Goodreads More Tags.zip'
Traceback (most recent call last):
File "calibre/customize/ui.py", line 744, in initialize_plugins
File "calibre/customize/ui.py", line 64, in load_plugin
File "calibre/customize/zipplugin.py", line 304, in load
File "importlib/__init__.py", line 126, in import_module
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "calibre/customize/zipplugin.py", line 203, in exec_module
File "calibre_plugins.goodreads_more_tags.__init__" , line 12, in <module>
from .config import plugin_prefs, KEY_INTEGRATION_ENABLED, KEY_INTEGRATION_TIMEOUT
File "calibre/customize/zipplugin.py", line 203, in exec_module
File "calibre_plugins.goodreads_more_tags.config", line 7, in <module>
from calibre.gui2 import get_current_db, question_dialog
File "bypy-importer.py", line 279, in exec_module
File "calibre/gui2/__init__.py", line 13, in <module>
ImportError: cannot import name 'QApplication' from 'qt.core' (/usr/lib/calibre/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/core.pyc)
Successfully initialized third party plugins: Calibre Power Search Plugin (2, 1, 2) && Smashwords Metadata (1, 0, 2)
Traceback (most recent call last):
File "runpy.py", line 196, in _run_module_as_main
File "runpy.py", line 86, in _run_code
File "site.py", line 45, in <module>
File "site.py", line 41, in main
File "calibre/debug.py", line 226, in main
File "calibre/gui_launch.py", line 72, in calibre
File "bypy-importer.py", line 279, in exec_module
File "calibre/gui2/__init__.py", line 13, in <module>
ImportError: cannot import name 'QApplication' from 'qt.core' (/usr/lib/calibre/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/core.pyc)

Any ideas what is going wrong here? I have checked the items shown on the Linux install page of the Calibre website and I seem to meet all requirements.