From:   Aditya Garg <gargaditya08@live.com>
To:     Marcel Holtmann <marcel@holtmann.org>,
        Johan Hedberg <johan.hedberg@intel.com>,
        "johan.hedberg@gmail.com" <johan.hedberg@gmail.com>,
        Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
        "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
CC:     Orlando Chamberlain <redecorating@protonmail.com>,
        "admin@kodeit.net" <admin@kodeit.net>
Subject: [BUG] Slow bluetooth speed on Apple MacBook Pro 16,1
Thread-Topic: [BUG] Slow bluetooth speed on Apple MacBook Pro 16,1
Thread-Index: AQHX+5pgFv0y9sw7IUOZHdhR1j78nw==
Date:   Tue, 28 Dec 2021 03:24:09 +0000
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The file transfer speed on MacBook Pro 16,1 from an Android device to Mac i=
s too slow even if I transfer a file of a few Kbs. In case of a transfer fr=
om Mac to my Android device, it simply fails.

Some logs that might be helpful :-

-- Logs begin at Fri 2021-11-26 21:34:04 IST, end at Tue 2021-12-28 08:38:1=
6 IST. --
Dec 28 08:28:29 MacBook kernel: Bluetooth: Core ver 2.22
Dec 28 08:28:29 MacBook kernel: NET: Registered PF_BLUETOOTH protocol famil=
y
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI device and connection manage=
r initialized
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI socket layer initialized
Dec 28 08:28:29 MacBook kernel: Bluetooth: L2CAP socket layer initialized
Dec 28 08:28:29 MacBook kernel: Bluetooth: SCO socket layer initialized
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART driver ver 2.3
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol H4 registered
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol BCSP registere=
d
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol LL registered
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol ATH3K register=
ed
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol Three-wire (H5=
) registered
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol Intel register=
ed
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol Broadcom regis=
tered
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol QCA registered
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol AG6XX register=
ed
Dec 28 08:28:29 MacBook kernel: Bluetooth: HCI UART protocol Marvell regist=
ered
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM: failed to write updat=
e baudrate (-16)
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: Failed to set baudrate
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM: chip id 150
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM: features 0x07
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM4364B3 Trinidad Olympic=
 GEN (MFG)
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM (001.016.075) build 00=
99
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM: firmware Patch file n=
ot found, tried:
Dec 28 08:28:29 MacBook kernel: Bluetooth: hci0: BCM: 'brcm/BCM.hcd'
Dec 28 08:28:40 MacBook kernel: Bluetooth: BNEP (Ethernet Emulation) ver 1.=
3
Dec 28 08:28:40 MacBook kernel: Bluetooth: BNEP filters: protocol multicast
Dec 28 08:28:40 MacBook kernel: Bluetooth: BNEP socket layer initialized
Dec 28 08:35:02 MacBook kernel: Bluetooth: RFCOMM TTY layer initialized
Dec 28 08:35:02 MacBook kernel: Bluetooth: RFCOMM socket layer initialized
Dec 28 08:35:02 MacBook kernel: Bluetooth: RFCOMM ver 1.11=