Hello,
I can't remember since when I'm seeing the kernel message "unknown main
item tag 0x0" for many Bluetooth input devices, but it is since quiet
some time.
Has someone already tried to find out where that does come from?
My first guess would be that bluez misses one or more bytes a connection
startup, which is based on the fact that, since ever, it misses the
first keystroke of BT-keyboards too (the keystroke which wakes up the
keyboard and initiates the connection). And I'm pretty sure my keyboard
does transmit that initiating keystroke, because Windows receives it. ;)
Besides that, that guess isn't based on anything. I neither have tried
to search through the source nor did I run some tests.
But because I'm curious I can't completely ignore that kernel message,
even if I haven't experienced any obvious problems. So here is the
question if someone else has a pointer or has already searched what the
reason for that message is. I don't think it's a fault of the used
device(s), as I see this message for multiple bt-input-devices.
Regards,
Alexander Holler