Arch Linux

vimsucks

Member

Registered: 2016-09-26

Posts: 5

[SOLVED]rtl8723be bluetooth act weird

Everything is fine untill a disconnect my laptop from ac power.
It can still scan devices, but won't connect any of them.

journalctl -n 20

Jan 08 00:41:02 varch bluetoothd[435]: connect error: Connection refused (111)
Jan 08 00:41:04 varch kernel: Bluetooth: hci0 command 0x0408 tx timeout

dmesg

[   20.581175] Bluetooth: RFCOMM TTY layer initialized
[   20.581181] Bluetooth: RFCOMM socket layer initialized
[   20.581187] Bluetooth: RFCOMM ver 1.11
[   22.764528] Bluetooth: hci0 command 0x0c24 tx timeout
[   24.898661] Bluetooth: hci0 command 0x0c52 tx timeout
[   51.991805] Bluetooth: hci0 command 0x0405 tx timeout
[   92.312684] Bluetooth: hci0 command 0x0408 tx timeout
[   99.139488] Bluetooth: hci0 command 0x0405 tx timeout
[  140.100273] Bluetooth: hci0 command 0x0408 tx timeout
[  162.287404] Bluetooth: hci0 command 0x0408 tx timeout
[  312.284237] usbcore: deregistering interface driver btusb
[  428.423559] usbcore: registered new interface driver btusb
[  428.654816] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[  428.654818] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[  428.655765] Bluetooth: hci0: rom_version status=0 version=1
[  434.216542] usb 2-7: reset full-speed USB device number 4 using xhci_hcd
[  435.999718] Bluetooth: hci0 command 0x0405 tx timeout
[  476.320496] Bluetooth: hci0 command 0x0408 tx timeout
[  518.988067] Bluetooth: hci0 command 0x0408 tx timeout
[  540.202622] usbcore: deregistering interface driver btusb
[  545.649095] usbcore: registered new interface driver btusb
[  545.877784] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[  545.877787] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[  545.878673] Bluetooth: hci0: rom_version status=0 version=1
[  552.875621] usb 2-7: reset full-speed USB device number 4 using xhci_hcd
[  554.828755] Bluetooth: hci0 command 0x0405 tx timeout
[  595.789585] Bluetooth: hci0 command 0x0408 tx timeout
[  638.457174] Bluetooth: hci0 command 0x0408 tx timeout
[  827.900970] Bluetooth: hci0 command 0x0408 tx timeout
[  870.568516] Bluetooth: hci0 command 0x0408 tx timeout
[  972.970518] Bluetooth: hci0 command 0x0408 tx timeout
[ 1015.638048] Bluetooth: hci0 command 0x0408 tx timeout

rfkill list

0: tpacpi_bluetooth_sw: Bluetooth
        Soft blocked: no
        Hard blocked: no
1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
4: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

Last edited by vimsucks (2017-01-08 10:49:44)

Pineman13

Member

Registered: 2016-12-04

Posts: 26

Re: [SOLVED]rtl8723be bluetooth act weird

To be honest, I am having a somewhat similar issue with rtl8723bs, though I have not found a solution yet.
What is the device you are using? Is that a tablet or a laptop? And in general: the more hardware data you provide, the higher is the chance to find someone who might have had similar issues(or simply has a similar setup)

vimsucks

Member

Registered: 2016-09-26

Posts: 5

Re: [SOLVED]rtl8723be bluetooth act weird

My laptop is Thinkpad E550.
My card is rtl8723be.
I have installed rtlwifi_new-dkms from aur.
And I'm sure that after connecting my laptop with AC power, it can be connected again.

related module conf:

blacklist-rtlwifi_new-dkms.conf

install rtl8723be /bin/false

rtl8723be_dkms.conf

options rtl8723be_dkms ant_sel=1

vimsucks

Member

Registered: 2016-09-26

Posts: 5

Re: [SOLVED]rtl8723be bluetooth act weird

Finally I found the reason, it was caused by laptop-mode-tool.
See https://wiki.archlinux.org/index.php/La … _up_events
After disable runtime pm, everything works correctly.

Pineman13

Member

Registered: 2016-12-04

Posts: 26

Re: [SOLVED]rtl8723be bluetooth act weird

Oh, that's just great
Don't forget to edit your first post to mark the topic as "[SOLVED]"