Erro de conexão Bluetooth

Question

Eu quero conectar meu laptop (Arch Linux) ao arduino. Estou conectando via bluez e usando o hc-05 no lado do arduino.

O problema é que o bluez está se conectando bem com o telefone Android, o telefone Android está conectando bem com o hc-05 também, mas ao tentar conectar o bluez ao hc-05 ele nunca conecta.

Ele se duplica com sucesso, mas não se conecta. Mais cedo esta manhã eu estava tentando emparelhar e não estava emparelhando mas quando eu tentei conectar, conectou! Depois de uma reinicialização é o oposto agora, Ele pares, mas nunca se conecta

O erro é

[bluetooth]# connect 98:D3:31:90:24:76 
Attempting to connect to 98:D3:31:90:24:76
[CHG] Device 98:D3:31:90:24:76 Connected: yes
[CHG] Device 98:D3:31:90:24:76 ServicesResolved: yes
Failed to connect: org.bluez.Error.NotAvailable
[CHG] Device 98:D3:31:90:24:76 ServicesResolved: no
[CHG] Device 98:D3:31:90:24:76 Connected: no
[bluetooth]# 

O dmesg seria -

dmesg | grep luetooth
[    8.424435] Bluetooth: Core ver 2.22
[    8.424453] Bluetooth: HCI device and connection manager initialized
[    8.424459] Bluetooth: HCI socket layer initialized
[    8.424461] Bluetooth: L2CAP socket layer initialized
[    8.424467] Bluetooth: SCO socket layer initialized
[    8.588905] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[    8.588907] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[    8.752742] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[    8.765889] Bluetooth: hci0: rom_version status=0 version=1
[    8.765911] Bluetooth: cfg_sz 44, total size 22540
[   11.659685] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   11.659687] Bluetooth: BNEP filters: protocol multicast
[   11.659692] Bluetooth: BNEP socket layer initialized
[ 1150.278244] Bluetooth: RFCOMM TTY layer initialized
[ 1150.278253] Bluetooth: RFCOMM socket layer initialized
[ 1150.278275] Bluetooth: RFCOMM ver 1.11
[ 2967.008290] Bluetooth: hci0 urb ffff88013e088600 failed to resubmit (2)
[ 3644.900996] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=0e2f lmp_ver=06 lmp_subver=9f73
[ 3644.900998] Bluetooth: rtl: assuming no firmware upload needed.
[ 5274.608968] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 5274.608970] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 5274.609003] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 5274.609950] Bluetooth: hci0: rom_version status=0 version=1
[ 5274.609964] Bluetooth: cfg_sz 44, total size 22540
[root@Turing ~]# dmesg | grep luetooth
[    8.424435] Bluetooth: Core ver 2.22
[    8.424453] Bluetooth: HCI device and connection manager initialized
[    8.424459] Bluetooth: HCI socket layer initialized
[    8.424461] Bluetooth: L2CAP socket layer initialized
[    8.424467] Bluetooth: SCO socket layer initialized
[    8.588905] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[    8.588907] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[    8.752742] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[    8.765889] Bluetooth: hci0: rom_version status=0 version=1
[    8.765911] Bluetooth: cfg_sz 44, total size 22540
[   11.659685] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   11.659687] Bluetooth: BNEP filters: protocol multicast
[   11.659692] Bluetooth: BNEP socket layer initialized
[ 1150.278244] Bluetooth: RFCOMM TTY layer initialized
[ 1150.278253] Bluetooth: RFCOMM socket layer initialized
[ 1150.278275] Bluetooth: RFCOMM ver 1.11
[ 2967.008290] Bluetooth: hci0 urb ffff88013e088600 failed to resubmit (2)
[ 3644.900996] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=0e2f lmp_ver=06 lmp_subver=9f73
[ 3644.900998] Bluetooth: rtl: assuming no firmware upload needed.
[ 5274.608968] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 5274.608970] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 5274.609003] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 5274.609950] Bluetooth: hci0: rom_version status=0 version=1
[ 5274.609964] Bluetooth: cfg_sz 44, total size 22540