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Re: bluetooth hci0: firmware: failed to load brcm/BCM20702A1-0a5c-21e6.hcd




(note: that chipset is probably used by all recent thinkpad, which probably 
show that when iphones have no jack anymore, BT might not be so much used by 
Linux users)

If I do a "modprobe" (https://ubuntuforums.org/showthread.php?t=2346879)
modprobe -r btusb
modprobe btusb

I get that:

May 30 18:53:06 pluto kernel: usbcore: deregistering interface driver btusb
May 30 18:53:06 pluto kernel: Bluetooth: hci0 urb ffff8de95167e600 failed to 
resubmit (2)
May 30 18:53:06 pluto systemd[1]: Starting Load/Save RF Kill Switch Status...
May 30 18:53:06 pluto bluetoothd[457]: Endpoint unregistered: sender=:1.33 
path=/MediaEndpoint/A2DPSource
May 30 18:53:06 pluto systemd[1]: bluetooth.target: Unit not needed anymore. 
Stopping.
May 30 18:53:06 pluto bluetoothd[457]: Endpoint unregistered: sender=:1.33 
path=/MediaEndpoint/A2DPSink
May 30 18:53:06 pluto systemd[1]: Stopped target Bluetooth.
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto systemd[1]: Started Load/Save RF Kill Switch Status.
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:11 pluto systemd[1]: Reached target Bluetooth.
May 30 18:53:11 pluto kernel: usbcore: registered new interface driver btusb
May 30 18:53:11 pluto kernel: Bluetooth: hci0: BCM: chip id 63
May 30 18:53:11 pluto kernel: Bluetooth: hci0: ChromeLinux_8A81
May 30 18:53:11 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
0000
May 30 18:53:11 pluto kernel: bluetooth hci0: firmware: direct-loading 
firmware brcm/BCM20702A1-0a5c-21e6.hcd
May 30 18:53:12 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
1757
May 30 18:53:12 pluto kernel: Bluetooth: hci0: Broadcom Bluetooth Device


root@pluto:/lib/firmware/brcm# hciconfig -a
hci0:   Type: Primary  Bus: USB
        BD Address: 9C:2A:70:82:50:FB  ACL MTU: 1021:8  SCO MTU: 64:1
        DOWN 
        RX bytes:3374 acl:0 sco:0 events:409 errors:0
        TX bytes:36217 acl:0 sco:0 commands:408 errors:0
        Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH SNIFF 
        Link mode: SLAVE ACCEPT 

Seems nice, but actually, I do not have any adapter anymore:

root@pluto:/lib/firmware/brcm# bluetoothctl
[bluetooth]# list
[bluetooth]# 


You can see that here too:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801084

====

I also did that:
sudo cp /lib/firmware/brcm/BCM43142A0-0a5c-21e6.hcd /lib/firmware/brcm/BCM.hcd

Then modprobe -r and modprobe btusb 

And then the result: "bluetooth.target: Unit not needed anymore. Stopping"

May 30 18:53:06 pluto kernel: usbcore: deregistering interface driver btusb
May 30 18:53:06 pluto kernel: Bluetooth: hci0 urb ffff8de95167e600 failed to 
resubmit (2)
May 30 18:53:06 pluto systemd[1]: Starting Load/Save RF Kill Switch Status...
May 30 18:53:06 pluto bluetoothd[457]: Endpoint unregistered: sender=:1.33 
path=/MediaEndpoint/A2DPSource
May 30 18:53:06 pluto systemd[1]: bluetooth.target: Unit not needed anymore. 
Stopping.
May 30 18:53:06 pluto bluetoothd[457]: Endpoint unregistered: sender=:1.33 
path=/MediaEndpoint/A2DPSink
May 30 18:53:06 pluto systemd[1]: Stopped target Bluetooth.
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto systemd[1]: Started Load/Save RF Kill Switch Status.
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:06 pluto dbus[458]: [system] Rejected send message, 3 matched 
rules; type="error", sender=":1.33" (uid=1000 pid=1859 comm="/usr/bin/
pulseaudio --start --log-target=syslog ") in
May 30 18:53:11 pluto systemd[1]: Reached target Bluetooth.
May 30 18:53:11 pluto kernel: usbcore: registered new interface driver btusb
May 30 18:53:11 pluto kernel: Bluetooth: hci0: BCM: chip id 63
May 30 18:53:11 pluto kernel: Bluetooth: hci0: ChromeLinux_8A81
May 30 18:53:11 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
0000
May 30 18:53:11 pluto kernel: bluetooth hci0: firmware: direct-loading 
firmware brcm/BCM20702A1-0a5c-21e6.hcd
May 30 18:53:12 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
1757
May 30 18:53:12 pluto kernel: Bluetooth: hci0: Broadcom Bluetooth Device
May 30 18:55:41 pluto wpa_supplicant[570]: wlan1: WPA: Group rekeying 
completed with 7c:03:d8:81:d2:53 [GTK=CCMP]
May 30 18:56:48 pluto kernel: Bluetooth: hci0: BCM: chip id 63
May 30 18:56:48 pluto kernel: Bluetooth: hci0: Broadcom Bluetooth Device
May 30 18:56:48 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
1757
May 30 18:56:48 pluto kernel: bluetooth hci0: firmware: direct-loading 
firmware brcm/BCM20702A1-0a5c-21e6.hcd
May 30 18:56:49 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014) build 
1757
May 30 18:56:49 pluto kernel: Bluetooth: hci0: Broadcom Bluetooth Device
May 30 19:02:43 pluto systemd[1]: Starting Load/Save RF Kill Switch Status...
May 30 19:02:44 pluto kernel: usbcore: deregistering interface driver btusb
May 30 19:02:43 pluto systemd[1]: bluetooth.target: Unit not needed anymore. 
Stopping.
May 30 19:02:43 pluto systemd[1]: Stopped target Bluetooth.
May 30 19:02:43 pluto systemd[1]: Started Load/Save RF Kill Switch Status.

Things couldn't be worse.


On Tuesday, May 30, 2017 5:50:39 PM CEST you wrote:
> Dear all, (debian/sid)
> 
> Because I had this error in journalctl:
> Mar 09 15:17:09 pluto kernel: Bluetooth: hci0: BCM20702A
> Mar 09 15:17:09 pluto kernel: Bluetooth: hci0: BCM20702A1 (001.002.014)
> build 0000
> Mar 09 15:17:09 pluto kernel: bluetooth hci0: firmware: failed to load brcm/
> BCM20702A1-0a5c-21e6.hcd (-2)
> Mar 09 15:17:09 pluto kernel: bluetooth hci0: Direct firmware load for brcm/
> BCM20702A1-0a5c-21e6.hcd failed with error -2
> Mar 09 15:17:09 pluto kernel: Bluetooth: hci0: BCM: Patch brcm/
> BCM20702A1-0a5c-21e6.hcd not found
> 
> And because my BT was working... But not so well...
> 
> And after taking advices on #debian-next...
> 
> (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831592)
> 
> I followed the instructions there:
> https://github.com/winterheart/broadcom-bt-firmware
> 
> and simply copied the file:
> BCM20702A1-0a5c-21e6.hcd
> there:
> /lib/firmware/brcm
> 
> =====
> 
> After that, and some reboot, I didn't have any bluetooth at all anymore:
> The only thing BT in journalctl was:
> May 30 17:18:03 pluto dbus[416]: [system] Failed to activate service
> 'org.bluez': timed out
> 
> And no trace anymore of the mere string "BCM20702" (ignore case option...)
> 
> I did even thought that it had "burnt" my chipset
> 
> =====
> 
> So I removed the file BCM20702A1-0a5c-21e6.hcd altogether,
> 
> And rebooted,
> 
> And now I do have BT again;
> 
> Though minimalist and not working well...
> (actually can't be used, broken; can be use 1 minute, with difficulties...)
> 
> =====
> 
> I would appreciate help to have that working.
> 
> 
> Best,
> Chris