After two weeks and several kernel updates later the index error is gone (EDIT: Thought so, but after reviewing journalctl it’s still there!), but bluetooth still isn’t working.
What I’ve done so far:
- Tested several firmware-atheros packages (the newest from 2021, an older one which I had on my harddrive from 2018 and a newer one from 2019)
- disabled bluetooth service and reenabled it (via systemctl)
- system restarts
What I see:
- rfkill sees it and is able to block/unblock it
- bluetoothctl -> show results in:
No default controller available - btmgmt power off (or on) results in:
Set Powered for hci0 failed with status 0x11 (Invalid Index)
Does anybody have another idea how to pinpoint the issue?
EDIT: Seems to be fixed with the kernel version 5.10.0-6, see here:
https://bugzilla.kernel.org/show_bug.cgi?id=210279