Hi Daniel, Thank you for your quick response. Yes, the computer (an embedded device board on which the said Ubunutu is running) already had Discoverable set to on (yes) by default. So I did not explicitly set it via your command. But, just I applied the command. Even now there is no change as to the detectability. Please see the terminal output below
Another point I just noticed (before running the command) is that if I am really close to the ubuntu device, then intermittently my android phone detects it, but then I have to be absurdly close (literally keep my phone right next to to the device). ***This was never the case**** and I suspect the issue mentioned in my original post - "Not enough free handles to register service". [bluetooth]# show Controller 00:04:4B:8D:2F:05 Name: tegra-ubuntu Alias: tegra-ubuntu Class: 0x200000 Powered: yes Discoverable: yes Pairable: yes UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb) UUID: A/V Remote Control (0000110e-0000-1000-8000-00805f9b34fb) UUID: PnP Information (00001200-0000-1000-8000-00805f9b34fb) UUID: Generic Access Profile (00001800-0000-1000-8000-00805f9b34fb) UUID: Handsfree (0000111e-0000-1000-8000-00805f9b34fb) UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb) Modalias: usb:v1D6Bp0246d0525 Discovering: no [bluetooth]# agent on Agent registered [bluetooth]# default-agent Default agent request successful [bluetooth]# scan on Discovery started [CHG] Controller 00:04:4B:8D:2F:05 Discovering: yes [NEW] Device 46:72:B0:23:5F:BD 46-72-B0-23-5F-BD -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1825821 Title: [Nvidia Tegra] Ubuntu 16.04 : Bluetooth can't be detected by other devices Status in bluez package in Ubuntu: Incomplete Bug description: Hi, I am running an Ubuntu 16.04 machine. I tried to start the system bluetooth through the following steps: 1. Ensured that bluetooth was unblocked through the command rfkill 2. Set bluetooth to powered on, agent on, default-agent and scan on through bluetootctl On completing these steps, Bluetooth icon shows up as active on the system, but other devices are unable to scan it and consequently not able to connect to it. This Ubuntu does not appear in the list of bluetooth devices for other devices' scan. 3. I ran systemctl status bluetooth I am getting the following errors: nvidia@tegra-ubuntu:~$ systemctl status bluetooth ● bluetooth.service - Bluetooth service Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2019-04-22 15:57:21 IST; 10min ago Docs: man:bluetoothd(8) Main PID: 1087 (bluetoothd) Status: "Running" CGroup: /system.slice/bluetooth.service └─1087 /usr/lib/bluetooth/bluetoothd Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Error adding Link Loss service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Not enough free handles to register service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Not enough free handles to register service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Not enough free handles to register service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Current Time Service could not be registered Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: gatt-time-server: Input/output error (5) Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Not enough free handles to register service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Not enough free handles to register service Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: Sap driver initialization failed. Apr 22 15:57:21 tegra-ubuntu bluetoothd[1087]: sap-server: Operation not permitted (1) --- ApportVersion: 2.20.1-0ubuntu2.18 Architecture: arm64 CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 InterestingModules: rfcomm bnep bluetooth Lspci: Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 413c:301a Dell Computer Corp. Bus 001 Device 003: ID 413c:2113 Dell Computer Corp. Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Package: bluez 5.37-0ubuntu5.1 PackageArchitecture: arm64 ProcKernelCmdLine: root=/dev/mmcblk0p1 rw rootwait console=ttyS0,115200n8 console=tty0 OS=l4t fbcon=map:0 net.ifnames=0 memtype=0 video=tegrafb no_console_suspend=1 earlycon=uart8250,mmio32,0x03100000 nvdumper_reserved=0x2772e0000 gpt tegraid=18.1.2.0.0 tegra_keep_boot_clocks maxcpus=6 androidboot.serialno=0323117055596 bl_prof_dataptr=0x10000@0x277240000 sdhci_tegra.en_boot_part_access=1 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 Tags: xenial Uname: Linux 4.4.38-tegra aarch64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip floppy sudo video _MarkForUpload: True hciconfig: hci0: Type: BR/EDR Bus: UART BD Address: 00:04:4B:8D:2F:05 ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING PSCAN ISCAN RX bytes:794 acl:0 sco:0 events:52 errors:0 TX bytes:2128 acl:0 sco:0 commands:52 errors:0 mtime.conffile..etc.bluetooth.main.conf: 2019-03-21T12:36:43.871783 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1825821/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp