I downloaded the Impish Mate version of 09-25-2021 and I made a fresh installation. I also proceeded to update (it only updated Firefox because I believe all other updates were included). Unfortunately the indicated problem has not been solved. I also tried with the updated Ubuntu Mate 20.04 LTS but it still doesn't work. I also used another Bluetooth adapter on another PC but the result is the same. Hello.
** Attachment added: "1.png" https://bugs.launchpad.net/ubuntu-mate/+bug/1943813/+attachment/5527856/+files/1.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1943813 Title: Problem with bluetooth keyboard: not usable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1943813/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs