[Bug 1910573] Re: calibre does not start in focal

[Hans Joachim Desserud]

*** This bug is a duplicate of bug 1898904 ***
https://bugs.launchpad.net/bugs/1898904

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1898904, so it is being marked as such.

** Tags added: focal

** This bug has been marked a duplicate of bug 1898904
   Calibre crashes at startup with AttributeError: 'NoneType' object has no 
attribute 'cancel'

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Title:
  calibre does not start in focal

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[Bug 1910573] Re: calibre does not start in focal

[g1pi]

** Description changed:

  calibre crashes in ubuntu 20.04.01:
  
- $ calibre 
   
- Traceback (most recent call last):
  
-   File "/usr/bin/calibre", line 20, in
- 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()   
+ $ apt policy calibre
+ calibre:
+   Installed: 4.99.4+dfsg+really4.12.0-1build1
+   Candidate: 4.99.4+dfsg+really4.12.0-1build1
+   Version table:
+  *** 4.99.4+dfsg+really4.12.0-1build1 500
+ 500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
+ 100 /var/lib/dpkg/status
+ 
+ $ calibre
+ Traceback (most recent call last):
+   File "/usr/bin/calibre", line 20, in 
+ 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'
  
  the patch at
  
https://github.com/kovidgoyal/calibre/commit/7b6416ac6522fc40f24f6baf3ca552b17a8b91d6
  solves the problem.
  
  best regards,
  g1

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Title:
  calibre does not start in focal

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