I appear to be seeing these same symptoms in an up to date Debian Buster, can you confirm which calibre version No this fix was made in.
$ uname -srv Linux 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2 (2021-01-30) $ calibre --version calibre (calibre 3.39.1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1834641 Title: Opening Kindle devices in Calibre will cause a disconnect from Linux LTS 4.19.51+ onwards To manage notifications about this bug go to: https://bugs.launchpad.net/calibre/+bug/1834641/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
