Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Questions well-nigh hardware, drivers and peripherals

jawenakat8ep
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Help Pairing Samsung Milky way Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

  • Linux Mint nineteen.three, 64-bit, Cinnamon
  • inxi -Fxz output

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                          Arrangement:    Host: redactedhost Kernel: 5.3.0-28-generic x86_64 $.25: 64 compiler: gcc five: 7.four.0 Desktop: Cinnamon 4.4.eight             Distro: Linux Mint nineteen.iii Tricia base: Ubuntu 18.04 bionic  Auto:   Type: Desktop Arrangement: Dell product: XPS 8900 v: N/A serial: <filter>             Mobo: Dell model: 0XJ8C4 five: A00 serial: <filter> UEFI: Dell 5: two.iv.0 engagement: 07/25/2018  Bombardment:   Device-one: hidpp_battery_4 model: Logitech Marathon Mouse/Functioning Plus M705 charge: 55% status: Discharging             Device-2: hidpp_battery_5 model: Logitech MK700 charge: 70% condition: Discharging  CPU:       Topology: Quad Cadre model: Intel Cadre i7-6700K bits: 64 type: MT MCP arch: Skylake-S rev: 3 L2 cache: 8192 KiB             flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 63999             Speed: 900 MHz min/max: 800/4200 MHz Cadre speeds (MHz): one: 900 ii: 900 iii: 900 4: 899 5: 900 6: 900 7: 900 8: 899  Graphics:  Device-one: NVIDIA GM206 [GeForce GTX 960] driver: nvidia v: 430.50 bus ID: 01:00.0             Display: x11 server: 10.Org one.19.half dozen driver: nvidia unloaded: fbdev,modesetting,nouveau,vesa             resolution: 1920x1080~60Hz, 1920x1080~60Hz             OpenGL: renderer: GeForce GTX 960/PCIe/SSE2 v: 4.6.0 NVIDIA 430.50 directly return: Aye  Audio:     Device-i: Intel 100 Series/C230 Serial Family Hard disk Sound vendor: Dell Sunrise Point-H commuter: snd_hda_intel 5: kernel             charabanc ID: 00:1f.iii             Device-two: NVIDIA driver: snd_hda_intel v: kernel omnibus ID: 01:00.1             Sound Server: ALSA v: k5.iii.0-28-generic  Network:   Device-1: Intel Ethernet I219-5 vendor: Dell driver: e1000e v: 3.2.6-g port: f000 omnibus ID: 00:1f.6             IF: enp0s31f6 state: up speed: 1000 Mbps duplex: total mac: <filter>             Device-2: Broadcom and subsidiaries BCM4352 802.11ac Wireless Network Adapter vendor: Dell driver: wl v: kernel             port: e000 bus ID: 02:00.0             IF: wlp2s0 state: down mac: <filter>             IF-ID-1: tun0 state: unknown speed: ten Mbps duplex: full mac: N/A  Drives:    Local Storage: total: 3.56 TiB used: 1.97 TiB (55.three%)             ID-one: /dev/sda vendor: Seagate model: ST2000DM001-1ER164 size: ane.82 TiB             ID-ii: /dev/sdb vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB             ID-iii: /dev/sdc vendor: SK Hynix model: SC311 SATA 256GB size: 238.47 GiB             ID-4: /dev/sdd type: USB model: USB-HS WDC WD1600BB-00R size: 149.05 GiB             ID-five: /dev/sde blazon: USB vendor: Hitachi model: HDT721010SLA360 size: 931.51 GiB  RAID:      Hardware-one: Intel SATA Controller [RAID mode] commuter: ahci v: 3.0 motorcoach ID: 00:17.0  Partition: ID-one: / size: 201.04 GiB used: 125.01 GiB (62.2%) fs: ext4 dev: /dev/dm-1             ID-two: /boot size: 704.five MiB used: 386.3 MiB (54.viii%) fs: ext4 dev: /dev/sdc2             ID-3: bandy-one size: 31.94 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/dm-ii  Sensors:   System Temperatures: cpu: 27.0 C mobo: N/A gpu: nvidia temp: 43 C             Fan Speeds (RPM): N/A gpu: nvidia fan: 30%  Info:      Processes: 380 Uptime: 23h 53m Memory: 31.thirty GiB used: 10.87 GiB (34.7%) Init: systemd runlevel: 5 Compilers:             gcc: seven.4.0 Shell: bash v: 4.four.twenty inxi: 3.0.32                                          
  • relevant output from lsusb

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                          Autobus 001 Device 009: ID 0a5c:216f Broadcom Corp. BCM20702A0 Bluetooth                    
  • relevant output from sudo rfkill listing

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                          2: hci0: Bluetooth 	Soft blocked: no 	Hard blocked: no                                          
  • output from bluetoothctl devices, info, & pair attempt

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                          [bluetooth]# devices Device F4:7D:EF:BF:F4:3F Galaxy Buds (F43F)  [bluetooth]# info F4:7D:EF:BF:F4:3F Device F4:7D:EF:BF:F4:3F (public) 	Name: Galaxy Buds (F43F) 	Alias: Galaxy Buds (F43F) 	Class: 0x00240404 	Icon: audio-card 	Paired: no 	Trusted: aye 	Blocked: no 	Continued: no 	LegacyPairing: no 	RSSI: -59  [bluetooth]# pair F4:7D:EF:BF:F4:3F Attempting to pair with F4:7D:EF:BF:F4:3F Failed to pair: org.bluez.Fault.ConnectionAttemptFailed                                          

How-do-you-do everyone,

I'm trying to pair my Galaxy Buds so I can attend a remote class without disturbing those effectually me, but am running into the issues you can run across above. I tried following viewtopic.php?t=228805 merely I'm not finding any errors when I run 'dmesg | grep blue'. I don't know if my issue is firmware related like in the postal service I referenced, just I'thousand leery of downloading random firmware...

Whatsoever suggestions on how to troubleshoot this further, and better yet prepare it? :)

Thank you for your aid!
Brian

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MrEen
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Re: Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Fault.ConnectionAttemptFailed

Mail by MrEen »

Hullo jawenakat8ep, and welcome to the forum.

Does dmesg | grep -i bluetooth render anything? There should at least be something like this:

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                  [   22.033939] Bluetooth: Core ver 2.22 [   22.033954] Bluetooth: HCI device and connection managing director initialized [   22.033958] Bluetooth: HCI socket layer initialized [   22.033960] Bluetooth: L2CAP socket layer initialized [   22.033966] Bluetooth: SCO socket layer initialized [   24.873698] Bluetooth: BNEP (Ethernet Emulation) ver 1.three [   24.873701] Bluetooth: BNEP filters: protocol multicast [   24.873705] Bluetooth: BNEP socket layer initialized [   38.037540] Bluetooth: RFCOMM TTY layer initialized [   38.037547] Bluetooth: RFCOMM socket layer initialized [   38.037551] Bluetooth: RFCOMM ver 1.11                

Then check dmesg | grep -i bluetooth | grep -i firmware and if that returns something similar this:

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                  bluetooth hci1: Direct firmware load for brcm/BCM20702A1-0b05-17cb.hcd failed with fault -2 Bluetooth: hci1: BCM: Patch brcm/BCM20702A1-0b05-17cb.hcd non establish                

you probably do demand to update the firmware (come across hither) which we can aid with if necessary.

If the concluding control returns zip, we'll need improve help than I can provide.

jawenakat8ep
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Re: Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Fault.ConnectionAttemptFailed

Post by jawenakat8ep »

I gauge I missed the "-i" switch previously....

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                  [    3.989523] usb ane-xi: Product: BCM920702 Bluetooth 4.0 [   21.866688] Bluetooth: Cadre ver 2.22 [   21.866697] Bluetooth: HCI device and connectedness director initialized [   21.866699] Bluetooth: HCI socket layer initialized [   21.866700] Bluetooth: L2CAP socket layer initialized [   21.866702] Bluetooth: SCO socket layer initialized [   22.006541] Bluetooth: hci0: BCM: chip id 63 [   22.007540] Bluetooth: hci0: BCM: features 0x07 [   22.023580] Bluetooth: hci0: HOSTNAME [   22.024580] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1338 [   22.030385] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0a5c-216f.hcd failed with mistake -2 [   22.030387] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0a5c-216f.hcd not found [   26.919233] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [   26.919234] Bluetooth: BNEP filters: protocol multicast [   26.919237] Bluetooth: BNEP socket layer initialized [   48.157010] Bluetooth: RFCOMM TTY layer initialized [   48.157017] Bluetooth: RFCOMM socket layer initialized [   48.157021] Bluetooth: RFCOMM ver 1.11                                  

I'll follow upward on the firmware link yous sent and get back with yous. Thank you!

flashfyre
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Re: Assistance Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post by flashfyre »

I'm using linux mint 19.3 and kernel 5.3

My "Passenger vehicle 003 Device 002: ID 0a5c:21e8 Broadcom Corp. BCM20702A0 Bluetooth 4.0" shows the same firmware load upshot merely information technology works. I do have to remove and re-pair my headphones occasionally.

The firmware load failure bulletin might be a fallback characteristic. I believe native support for this scrap has been in the linux kernel for quite awhile.

Can anyone confirm?

jawenakat8ep
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Re: Assist Pairing Samsung Milky way Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post by jawenakat8ep »

Sorry for the lag in response time; I but got effectually to this tonight.

I copied BCM20702A1-0a5c-216f.hcd from https://github.com/winterheart/broadcom ... aster/brcm to /lib/firmware/brcm and rebooted. Now when I open my Bluetooth settings it just says "searching for devices..."

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                  [bluetooth]# evidence No default controller available [bluetooth]# list [bluetooth]#                                  

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                  dmesg|grep -i bluetooth [    3.991808] usb one-xi: Product: BCM920702 Bluetooth four.0 [   eighteen.793258] Bluetooth: Core ver 2.22 [   18.793268] Bluetooth: HCI device and connection managing director initialized [   eighteen.793270] Bluetooth: HCI socket layer initialized [   xviii.793271] Bluetooth: L2CAP socket layer initialized [   eighteen.793273] Bluetooth: SCO socket layer initialized [   19.003921] Bluetooth: hci0: BCM: fleck id 63 [   xix.005287] Bluetooth: hci0: BCM: features 0x07 [   19.021336] Bluetooth: hci0: HOSTNAME [   19.022277] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1338 [   21.255919] Bluetooth: hci0: command 0x0a0a tx timeout [   23.668673] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [   23.668675] Bluetooth: BNEP filters: protocol multicast [   23.668677] Bluetooth: BNEP socket layer initialized [   29.288181] Bluetooth: hci0: BCM: Patch control 0a0a failed (-110) [   31.531912] Bluetooth: hci0: command 0x1001 tx timeout [   39.528180] Bluetooth: hci0: BCM: Reading local version info failed (-110)                                  

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                  systemctl status bluetooth ● bluetooth.service - Bluetooth service    Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)    Active: agile (running) since Tue 2020-02-11 19:28:18 CST; 6min agone      Docs: human:bluetoothd(eight)  Master PID: 1358 (bluetoothd)    Status: "Running"     Tasks: 1 (limit: 4915)    CGroup: /system.slice/bluetooth.service            └─1358 /usr/lib/bluetooth/bluetoothd  February 11 19:28:18 ncc-1701 systemd[1]: Starting Bluetooth service... Feb eleven 19:28:18 ncc-1701 bluetoothd[1358]: Bluetooth daemon v.48 Feb eleven 19:28:eighteen ncc-1701 bluetoothd[1358]: Starting SDP server February 11 19:28:xviii ncc-1701 systemd[ane]: Started Bluetooth service. Feb eleven 19:28:18 ncc-1701 bluetoothd[1358]: Bluetooth direction interface 1.fourteen initialized                                  

I'm not sure what else to check... Suggestions? I'm going to keep excavation around in the meantime.

jawenakat8ep
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Re: Assistance Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post past jawenakat8ep »

I renamed the hcd file and rebooted again, and my Logitech wireless keyboard and mouse stopped working, on top of Bluetooth not working...

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                  systemctl status bluetooth ● bluetooth.service - Bluetooth service    Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)    Active: inactive (expressionless)      Docs: human being:bluetoothd(8)                                  

I plugged in a wired keyboard and rebooted over again. The weird thing is my wireless keyboard worked fine to enter the LUKS password upon boot, but as presently as Mint came upward with the login screen it was dead in the water. And so was the wired keyboard at first. Finally afterwards 20-30 seconds they both started working.

Only the systemctl status bluetooth output remains the aforementioned as what I posted higher up, and dmesg | grep -i bluetooth returns Cypher over again.

EDIT: forgot to mention that I've already tried sudo systemclt start bluetooth. I enter my password and get no output. status remains the same.

EDIT 2: rfkill no longer even references hc0

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                  rfkill ID Type DEVICE      SOFT      Hard  0 wlan phy0     blocked unblocked  1 wlan brcmwl-0 blocked unblocked                                  

Concluding edited by jawenakat8ep on Tue Feb 11, 2020 10:06 pm, edited ane time in total.

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MrEen
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Re: Help Pairing Samsung Milky way Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post by MrEen »

I recollect I have an idea. Let's see the output of ls -l /lib/firmware/brcm/

I'm suspecting there may take been file with the A0 similar this: BCM20702A0-0a5c-216f.hcd

If and so, navigate to the folder with cd /lib/firmware/brcm/ then run md5sum BCM20702A0-0a5c-216f.hcd BCM20702A1-0a5c-216f.hcd to encounter if they have the same output.

If the output is dissimilar for each file, delete the one nosotros added and rename the onetime one to the new name:

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                  sudo rm /lib/firmware/brcm/BCM20702A1-0a5c-216f.hcd sudo cp /lib/firmware/brcm/BCM20702A0-0a5c-216f.hcd /lib/firmware/brcm/BCM20702A1-0a5c-216f.hcd                

Then shut downwardly for a minute. Boot up into Mint and then test.

If the md5sum output was identical, try shutting downwards for a infinitesimal instead of rebooting.

jawenakat8ep
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Re: Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Mail service by jawenakat8ep »

I don't see *whatsoever* .hcd files also the one I downloaded then renamed...

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                  ls -l /lib/firmware/brcm/ full 16608 -rw-rw-r-- 1 myusername myusername   67028 February 11 19:25 BCM20702A1-0a5c-216f.hcd.old -rw-r--r-- 1 root       root        269595 Mar 29  2017 bcm4329-fullmac-4.bin -rw-r--r-- 1 root       root         96224 Mar 29  2017 bcm43xx-0.fw -rw-r--r-- ane root       root           180 Mar 29  2017 bcm43xx_hdr-0.fw -rw-r--r-- one root       root        397312 Mar 29  2017 brcmfmac43143.bin -rw-r--r-- one root       root        385067 Nov 17  2017 brcmfmac43143-sdio.bin -rw-r--r-- i root       root        348160 Mar 29  2017 brcmfmac43236b.bin -rw-r--r-- 1 root       root        455745 Mar 29  2017 brcmfmac43241b0-sdio.bin -rw-r--r-- i root       root        403855 Mar 29  2017 brcmfmac43241b4-sdio.bin -rw-r--r-- 1 root       root        408682 Mar 29  2017 brcmfmac43241b5-sdio.bin -rw-r--r-- i root       root        479232 Mar 29  2017 brcmfmac43242a.bin -rw-r--r-- 1 root       root        253748 Mar 29  2017 brcmfmac4329-sdio.bin -rw-r--r-- 1 root       root        222126 Mar 29  2017 brcmfmac4330-sdio.bin -rw-r--r-- 1 root       root        402210 Dec 12 07:48 brcmfmac43340-sdio.bin -rw-r--r-- 1 root       root        451566 Mar 29  2017 brcmfmac4334-sdio.bin -rw-r--r-- 1 root       root        569291 Mar 29  2017 brcmfmac4335-sdio.bin -rw-r--r-- 1 root       root        219557 Dec 12 07:48 brcmfmac43362-sdio.bin -rw-r--r-- 1 root       root        562183 Jul 12  2019 brcmfmac4339-sdio.bin -rw-r--r-- 1 root       root        382455 April 25  2018 brcmfmac43430a0-sdio.bin -rw-r--r-- ane root       root        369577 Dec 12 07:48 brcmfmac43430-sdio.bin -rw-r--r-- 1 root       root        488193 Mar 29  2017 brcmfmac43455-sdio.bin -rw-r--r-- one root       root        623304 November 17  2017 brcmfmac4350c2-pcie.bin -rw-r--r-- 1 root       root        626140 Mar 29  2017 brcmfmac4350-pcie.bin -rw-r--r-- one root       root        626589 Dec 12 07:48 brcmfmac4354-sdio.bin -rw-r--r-- 1 root       root        557056 Mar 29  2017 brcmfmac43569.bin -rw-r--r-- one root       root        661999 Dec 12 07:48 brcmfmac4356-pcie.bin -rw-r--r-- 1 root       root        526383 November 17  2017 brcmfmac4356-sdio.bin -rw-r--r-- one root       root        550333 Mar 29  2017 brcmfmac43570-pcie.bin -rw-r--r-- 1 root       root        633817 Jul 12  2019 brcmfmac4358-pcie.bin -rw-r--r-- 1 root       root        595472 Nov 17  2017 brcmfmac43602-pcie.ap.bin -rw-r--r-- i root       root        635449 Nov 17  2017 brcmfmac43602-pcie.bin -rw-r--r-- 1 root       root        989401 December 12 07:48 brcmfmac4366b-pcie.bin -rw-r--r-- ane root       root       1120971 Jul 12  2019 brcmfmac4366c-pcie.bin -rw-r--r-- 1 root       root        623448 Mar 29  2017 brcmfmac4371-pcie.bin -rw-r--r-- 1 root       root        479232 Apr 25  2018 brcmfmac4373.bin -rw-r--r-- 1 root       root        457994 Apr 25  2018 brcmfmac4373-sdio.bin                                  
jawenakat8ep
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Re: Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post by jawenakat8ep »

Ok this is crazy....

I found this viewtopic.php?t=277584 and started following along.
all of a sudden dmesg started showing bluetooth entries once more!

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                  dmesg | egrep -i 'blue|firm' [    0.164788] Spectre V2 : Enabling Restricted Speculation for firmware calls [    0.205745] ACPI: [Firmware Problems]: BIOS _OSI(Linux) query ignored [    1.087237] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire control/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80 [    1.087242] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80 [ 1684.195510] Bluetooth: Core ver ii.22 [ 1684.195550] Bluetooth: HCI device and connectedness manager initialized [ 1684.195556] Bluetooth: HCI socket layer initialized [ 1684.195559] Bluetooth: L2CAP socket layer initialized [ 1684.195563] Bluetooth: SCO socket layer initialized myusername@HOSTNAME:~$ systemctl status bluetooth ● bluetooth.service - Bluetooth service    Loaded: loaded (/lib/systemd/organization/bluetooth.service; enabled; vendor preset: enabled)    Active: inactive (expressionless)      Docs: man:bluetoothd(8) myusername@HOSTNAME:~$ sudo systemctl showtime bluetooth myusername@HOSTNAME:~$ systemctl status bluetooth ● bluetooth.service - Bluetooth service    Loaded: loaded (/lib/systemd/organisation/bluetooth.service; enabled; vendor preset: enabled)    Active: active (running) since Tue 2020-02-xi xx:19:43 CST; 1s ago      Docs: man:bluetoothd(8)  Main PID: 8024 (bluetoothd)    Status: "Running"     Tasks: 1 (limit: 4915)    CGroup: /arrangement.slice/bluetooth.service            └─8024 /usr/lib/bluetooth/bluetoothd  February eleven 20:xix:43 HOSTNAME systemd[1]: Starting Bluetooth service... Feb 11 xx:19:43 HOSTNAME bluetoothd[8024]: Bluetooth daemon 5.48 Feb eleven 20:xix:43 HOSTNAME systemd[1]: Started Bluetooth service. February 11 twenty:19:43 HOSTNAME bluetoothd[8024]: Starting SDP server Feb 11 twenty:19:43 HOSTNAME bluetoothd[8024]: Bluetooth management interface ane.14 initialized                                  

So the service is running now at least, just bluetoothctl says there's no controller.

I'll try renaming the hcd dorsum and chown similar yous suggested...

jawenakat8ep
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Re: Assistance Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Post by jawenakat8ep »

Ok we're making progress! lol

The bluetooth service is running

But bluetoothctl withal doesn't see a controller.

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                  dmesg | egrep -i 'bluish|firm' [    0.164739] Spectre V2 : Enabling Restricted Speculation for firmware calls [    0.203626] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored [    i.087203] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does non encompass the unabridged command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80 [    ane.087208] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does non encompass the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80 [   17.459041] Bluetooth: Cadre ver two.22 [   17.459053] Bluetooth: HCI device and connection manager initialized [   17.459055] Bluetooth: HCI socket layer initialized [   17.459057] Bluetooth: L2CAP socket layer initialized [   17.459059] Bluetooth: SCO socket layer initialized [   17.588850] Bluetooth: hci0: BCM: flake id 63 [   17.589911] Bluetooth: hci0: BCM: features 0x07 [   17.605835] Bluetooth: hci0: BCM20702A [   17.606832] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000 [   xix.719187] Bluetooth: hci0: control 0x0a0a tx timeout [   22.241808] Bluetooth: BNEP (Ethernet Emulation) ver 1.three [   22.241809] Bluetooth: BNEP filters: protocol multicast [   22.241811] Bluetooth: BNEP socket layer initialized [   27.751436] Bluetooth: hci0: BCM: Patch control 0a0a failed (-110) [   29.991165] Bluetooth: hci0: command 0x1001 tx timeout [   37.991272] Bluetooth: hci0: BCM: Reading local version info failed (-110)                                  

I may accept to step away in a few minutes - I've been informed dinner is near ready and my presence volition exist required ;)

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MrEen
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MrEen
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Re: Assist Pairing Samsung Milky way Buds - Failed to pair: org.bluez.Fault.ConnectionAttemptFailed

Post by MrEen »

Okay, for starters, I found this odd:

From an before mail service later adding the file:

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                  [   xix.022277] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1338                

Almost recent:

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                  [   17.606832] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000                

How did the build change?

Also, while searching for ideas, I institute this almost 5 twelvemonth onetime Ubuntu thread with nevertheless symptoms y'all're experiencing and some of the same workarounds applied: https://askubuntu.com/questions/657392/ ... om-216f-bt

The OP in that thread never posted well-nigh having success in the end. I believe the Jeremy31 over there might be the same every bit our JeremyB from the thread you linked to. We may need his assistance in this thread as he's WAAAAAAAYYYY more experienced at this stuff.

This part would accept me a bit worried:

Side annotation: I but noticed if you contrary the order of 31, it kind of looks like a B

jawenakat8ep
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Re: Help Pairing Samsung Galaxy Buds - Failed to pair: org.bluez.Error.ConnectionAttemptFailed

Postal service by jawenakat8ep »

Finally circling back on this...

Now when I open Bluetooth, I get, "No Bluetooth adapters found".

lsusb no longer shows the Bluetooth entry in my offset mail:

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                  Coach 002 Device 003: ID 2109:8110 VIA Labs, Inc. Hub Passenger vehicle 002 Device 002: ID 2109:8110 VIA Labs, Inc. Hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 008: ID 051d:0002 American Ability Conversion Uninterruptible Power Supply Bus 001 Device 013: ID 046d:c52b Logitech, Inc. Unifying Receiver Double-decker 001 Device 011: ID 1a40:0101 Terminus Technology Inc. Hub Bus 001 Device 009: ID 1a86:e051 QinHeng Electronics  Bus 001 Device 007: ID 1a40:0101 Terminus Technology Inc. Hub Bus 001 Device 006: ID 13fd:1340 Initio Corporation Hi-Speed USB to SATA Span Bus 001 Device 004: ID 0411:002a BUFFALO INC. (formerly MelCo., Inc.) SMSC USB97C202 "HD-HB300V2-EU" Double-decker 001 Device 005: ID 2109:2811 VIA Labs, Inc. Hub Omnibus 001 Device 003: ID 2109:2811 VIA Labs, Inc. Hub Bus 001 Device 016: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Author Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub                                  

I was hoping maybe a fresh install of LM20 might resolve the outcome, but I booted off a USB stick and it still didn't see a bluetooth adapter.

Any ideas what might exist going on?