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what's this? everything used to work but now this error won't go away
#1  midol 10-24-2020, 09:38 PM
For no apparent reason I'm now getting this error when starting calibre on my Mint 20 laptop, does anyone know why?

dave@dave-900X1B:~$ calibre
qt5ct: using qt5ct plugin
Traceback (most recent call last):
File "/usr/bin/calibre", line 20, in <module>
sys.exit(calibre())
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
listener = create_listener()
File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
return Listener(address=gui_socket_address())
File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
with os.fdopen(os.open(pr_filename,
FileNotFoundError: [Errno 2] No such file or directory: '/var/crash/_usr_bin_calibre.1000.crash'

Original exception was:
Traceback (most recent call last):
File "/usr/bin/calibre", line 20, in <module>
sys.exit(calibre())
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
listener = create_listener()
File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
return Listener(address=gui_socket_address())
File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'
dave@dave-900X1B:~$ uname -a
Linux dave-900X1B 5.4.0-52-generic #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
dave@dave-900X1B:~$
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#2  gbm 10-24-2020, 10:24 PM
Quote midol
For no apparent reason I'm now getting this error when starting calibre on my Mint 20 laptop, does anyone know why?

dave@dave-900X1B:~$ calibre
qt5ct: using qt5ct plugin
Traceback (most recent call last):
File "/usr/bin/calibre", line 20, in <module>
sys.exit(calibre())
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
listener = create_listener()
File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
return Listener(address=gui_socket_address())
File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
with os.fdopen(os.open(pr_filename,
FileNotFoundError: [Errno 2] No such file or directory: '/var/crash/_usr_bin_calibre.1000.crash'

Original exception was:
Traceback (most recent call last):
File "/usr/bin/calibre", line 20, in <module>
sys.exit(calibre())
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
listener = create_listener()
File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
return Listener(address=gui_socket_address())
File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'
dave@dave-900X1B:~$ uname -a
Linux dave-900X1B 5.4.0-52-generic #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
dave@dave-900X1B:~$
Using a terminal start calibre in debug mode"

Code
calibre-debug -g
Post the result.

Spoiler Warning below






Should look like this using mint 20
Code
calibre-debug -g
calibre 5.3 embedded-python: True is64bit: True
Linux-5.4.0-52-generic-x86_64-with-glibc2.2.5 Linux ('64bit', 'ELF')
('Linux', '5.4.0-52-generic', '#57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020')
Python 3.8.5
Interface language: None
Successfully initialized third party plugins: DeDRM (7, 0, 0) && Baen (1, 2, 0) && Barnes & Noble (1, 2, 16) && Diaps Editing Toolbag (0, 3, 7) && EpubSplit (2, 9, 0) && Goodreads (1, 5, 1) && Hyphenate This! (0, 1, 3) && KindleUnpack - The Plugin (0, 82, 3) && Kobo Books (1, 8, 0) && Modify ePub (1, 6, 1) && Quality Check (1, 10, 1) && Webscription (1, 2, 0)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 85.08374384236453 x 85.18427947598252
Using calibre Qt style: True
[0.00] Starting up...
[0.00] Showing splash screen...
[0.08] splash screen shown
[0.08] Initializing db...
[0.32] db initialized
[0.32] Constructing main UI...
libpng warning: iCCP: known incorrect sRGB profile
Looking for desktop notifier support from: org.freedesktop.Notifications
org.freedesktop.Notifications found in 0.0 seconds
[1.66] main UI initialized...
[1.66] Hiding splash screen
Starting QuickView
[2.04] splash screen hidden
[2.04] Started up in 2.04 seconds with 3406 books


bernie
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#3  kovidgoyal 10-25-2020, 12:23 AM
It's Ubuntu publishing broken software as usual. Uninstall the Ubuntu calibre and install the official binaries from https://calibre-ebook.com/download_linux and you will be fine.
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#4  midol 10-26-2020, 11:01 PM
yes, worked fine, thanks so much! nice software!
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#5  BetterRed 10-28-2020, 05:27 PM
Moderator Notice

Later posts move to The Lounge

BR
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