[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
This bug was fixed in the package calibre - 4.99.4+dfsg+really4.12.0-1ubuntu1 --- calibre (4.99.4+dfsg+really4.12.0-1ubuntu1) focal; urgency=medium * Fix error during startup (LP: #1898904) - debian/patches/fix_cancel_attribute.patch: upstream patch to fix unknown attribute error in src/calibre/utils/ipc/server.py. -- Marc Deslauriers Wed, 23 Dec 2020 12:53:50 -0500 ** Changed in: calibre (Ubuntu Focal) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
** Tags removed: verification-needed verification-needed-focal ** Tags added: verification-done verification-done-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
I have installed calibre version 4.99.4+dfsg+really4.12.0-1ubuntu1 from the proposed repository and now it starts successfully. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
I have installed the calibre 4.99.4+dfsg+really4.12.0-1ubuntu1 package version from the proposed archive in Kubuntu 20.04. Calibre starts successfully. However, please note that I previously had patched the 4.99.4+dfsg+really4.12.0-1build1 version as suggested in #9, so it was starting anyway in my system. No conflict was given on apt install of the new version though, perhaps the patch being applied is exactly the same as that in #9? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Let's fix the immediate problem first, then someone can file a new bug and do the proper procedure to try and get a newer version into focal and groovy. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Thanks for releasing a fixed package. BUT, could you consider using a release version of calibre instead of a development version at a kind of random state. I see, that at the time focal was released there was no 5.x version available, but meanwhile official 5.x releases are. For a LTS version it's IMHO not a good idea to go with a development version, where other bugs might be still in or there might be a good chance calibre plugins are broken with this version. In the ubuntu dev list https://lists.ubuntu.com/archives/ubuntu-devel/2020-October/041236.html the debian caliber maintainer provided a 5.2 version for focal. I'm using it since he released it and it works fine. Source and amd64 packages are available there: deb http://www.preining.info/debian focal main deb-src http://www.preining.info/debian focal main Could you consider using this (or another 5.x version) instead? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Hello grofaty, or anyone else affected, Accepted calibre into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/calibre/4.99.4+dfsg+really4.12.0-1ubuntu1 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-focal. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: calibre (Ubuntu Focal) Status: In Progress => Fix Committed ** Tags added: verification-needed verification-needed-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Still happens as per https://askubuntu.com/q/1303977/66509 . -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Attached is a debdiff with the minimal fix for this issue. I've uploaded an updated package for processing by the SRU team also. ** Patch added: "calibre_4.99.4+dfsg+really4.12.0-1ubuntu1.debdiff" https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+attachment/5446311/+files/calibre_4.99.4+dfsg+really4.12.0-1ubuntu1.debdiff ** Changed in: calibre (Ubuntu Focal) Status: Confirmed => In Progress ** Description changed: - On Ubuntu 20.04 few months ago I installed Calibre from Ubuntu Store - official repository. + [Impact] + Calibre crashes on startup with Ubuntu 20.04. + + [Test Case] + - install new package + - see if Calibre launches or crashes immediately on startup + + [Where problems could occur] + This update contains an upstream commit which corrects the specific error which is happening on Ubuntu 20.04. It simply skips calling cancel() when it is not available. The only regression I can think of is if this patch is incomplete, but it seems to work fine. + + + Original report: + On Ubuntu 20.04 few months ago I installed Calibre from Ubuntu Store official repository. I have been using Calibre for months, but today opening it from Ubuntu Launcher and nothing happens, no error. Executing: calibre from terminal and the output is: 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() + 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' Command: calibre --version outputs: calibre (calibre 4.99.4) I tried: sudo apt purge calibre sudo apt autoremove sudo apt install calibre but the problem is the same. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: calibre 4.99.4+dfsg+really4.12.0-1build1 ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60 Uname: Linux 5.4.0-48-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.9 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Oct 7 18:07:57 2020 InstallationDate: Installed on 2019-10-23 (350 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) PackageArchitecture: all SourcePackage: calibre UpgradeStatus: Upgraded to focal on 2020-08-14 (54 days ago) modified.conffile..etc.default.apport: [modified] mtime.conffile..etc.default.apport: 2020-04-29T17:08:03.553351 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
When will this fix land to Ubuntu official repository? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Thanks grofaty, I'm a not so technical user and you instructions work fine. I did it! Only one question: The terminal output ends with: patching file /usr/lib/calibre/calibre/utils/ipc/server.py Failed to parse old style options string with error: 'ascii' codec can't decode byte 0xd9 in position 1: ordinal not in range(128) Is there anything to worry about? When I download a tecnical file, I never know where to put it. Can you give some advice? Thanks a lot! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Here https://lists.ubuntu.com/archives/ubuntu- devel/2020-October/041237.html is a suggestion to sync from Groovy to Focal in order to fix the issue: > I checked Calibre in Groovy (version 4.99.12+dfsg+really4.23.0-1) and it works fine. As per bug report #1898904 (https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/comments/7), Calibre >=4.15 has the required patch. So, instead of waiting for 5.2, can we backport current Groovy version of Calibre to Focal? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Yes, Ubuntu Focal had Python 3.8.2 at release time, but there was a security update to Python 3.8.5. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Maybe a python upgrade to 3.8.5 at some point since the release of focal? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
When this started to happen? I would be surprised if it was an update to focal (why?), but I have the feeling this was working at the beginning. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
I also applied patch and can confirm it resolves the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Applied patch and can confirm it resolves the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Patch applied. Thanks! Hope the package in the repository will be fixed soon. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: calibre (Ubuntu Focal) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
** Also affects: calibre (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: calibre (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
I have uploaded a patched version of calibre to a ppa: https://launchpad.net/~juanjo-benages/+archive/ubuntu/fixes It works for me. It should work as an interim until there is an updated package in the official Ubuntu repository. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Evans, great thanks for info how to fix, it works fine. I have written bash file for the users that are not so technical. Instructions: 1. Download file patch.sh from my post. 2. Open terminal, default keyboard shortcut is: CTRL+ALT+T 3. Set execution permissions: chown 700 patch.sh 4. Execute commands: ./patch.sh 5. Then you can delete patch.sh file: rm patch.sh Hope this helps for others too. P.S. For non-technical users, package maintainer that has packaged original Calibre program in Ubuntu 20.04, please update the package and push it to official Ubuntu repository. ** Attachment added: "patch.sh" https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+attachment/5421362/+files/patch.sh -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Ahhh, sorry bug in instructions above in step 3 should be: chmod 700 patch.sh -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
As a work-around for those affected, I can confirm that manually applying the upstream patch to `/usr/lib/calibre/calibre/utils/ipc/server.py` does allow Calibre to start up successfully. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'
Per https://bugzilla.redhat.com/show_bug.cgi?id=1840780#c2 this happens on python >= 3.8.3. As Focal ships 3.8.5 we get this bug. Juanjo linked and attached the upstream patch already, which is included in Calibre >= 4.15. Focal ships Calibre version 4.99.4 which I assume is some pre- release version of the Calibre 5 series which didn't yet include this fix. Calibre 5 is now available and presumably would also fix this issue. ** Summary changed: - Calibre crashes at startup with "/usr/bin/calibre, line 20" error + Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' ** Bug watch added: Red Hat Bugzilla #1840780 https://bugzilla.redhat.com/show_bug.cgi?id=1840780 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898904 Title: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
