I have Raspberry pi 3B+ and bluetooth speaker Beats Pill+. Using alsa I am transferring audio from rpi to speaker. It works well but after few minutes bluetooth connection falls down. Using dmesg logs like these:

Bluetooth: hci0: hardware error 0x00
Bluetooth: hci0: command 0x1003 tx timeout
Bluetooth: hci0: command 0x1001 tx timeout
Bluetooth: hci0: command 0x1009 tx timeout

are displayed, speaker LED is on like connection is still alive but bluetoothctl is showing Connected: no and of course I can't play anything.

Does anyone know how to repair this thing?

Thanks for advance.

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