The only other Bluetooth headphones I've had access to recently were a pair of Bose QC35 (1st generation). They showed up in the list of visible BT devices, but my laptop couldn't connect to them at all, despite numerous attempts. As a result, I bought the Sonys and got rid of the Bose.
If you take a look at bug 1724919, you'll see that other people have the same problem with other models of headphones. Attached is a copy of /var/log/syslog since last boot, with minor cleaning. Note that just after booting I wanted to use the headphones for real, so I manually ran the attached 'headphones' script to disconnect the headphones, reconnect them, and force A2DP mode. Then at 18:09:17, I deliberately recreated the bug by connecting the headphones, and unsuccessfully trying to set A2DP in the sound settings. ** Attachment added: "syslog_cleaned.txt" https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1854392/+attachment/5308567/+files/syslog_cleaned.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1854392 Title: Bluetooth headphones won't use A2DP on reconnect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1854392/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs