Bluetooth host is down

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Connection Failed: blueman.bluez.errors.DBusFailedError: Host is down

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Connection Failed: blueman.bluez.errors.DBusFailedError: Host is down

Post by James_Smith » Fri Jan 13, 2017 6:50 pm

More bluetooth problems. Different from the ones I had before but just as frustrating.

My bluetooth mouse fails to connect and I get the aforementioned error message. A google search reveals a solution for a bluetooth audio headset, but obviously that won’t work here.

Just now, I was able to get it to connect, and it started working again but just for a second. Then Blueman froze up and everything disconnected again. I killed Blueman and tried it again and it immediate froze. Prior to this modicum of success, I had turned off everything (mouse, computer, bluetooth speaker system) and turned it all back on again several times with no success.

mac@mac-Lenovo-Y50-70-Touch ~ $ inxi -FxzdSystem: Host: mac-Lenovo-Y50-70-Touch Kernel: 4.4.0-57-generic x86_64 (64 bit gcc: 5.4.0) Desktop: Cinnamon 3.2.7 (Gtk 3.18.9) Distro: Linux Mint 18.1 Serena Machine: System: LENOVO product: 20349 v: Lenovo Y50-70 Touch Mobo: LENOVO model: Lenovo Y50-70 Touch v: 31900058Std Bios: LENOVO v: 9ECN43WW(V3.03) date: 08/12/2015 CPU: Quad core Intel Core i7-4700HQ (-HT-MCP-) cache: 6144 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 19156 clock speeds: max: 3400 MHz 1: 2400 MHz 2: 2400 MHz 3: 2412 MHz 4: 2400 MHz 5: 2400 MHz 6: 2496 MHz 7: 2580 MHz 8: 2400 MHz Graphics: Card-1: Intel 4th Gen Core Processor Integrated Graphics Controller bus-ID: 00:02.0 Card-2: NVIDIA GM107M [GeForce GTX 860M] bus-ID: 01:00.0 Display Server: X.Org 1.18.4 driver: nvidia Resolution: 3840x2160@48.00hz GLX Renderer: GeForce GTX 860M/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 367.57 Direct Rendering: Yes Audio: Card-1 Intel 8 Series/C220 Series High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0 Card-2 Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller driver: snd_hda_intel bus-ID: 00:03.0 Sound: Advanced Linux Sound Architecture v: k4.4.0-57-generic Network: Card-1: Intel Wireless 7260 driver: iwlwifi bus-ID: 08:00.0 IF: wlp8s0 state: up mac: Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 09:00.0 IF: enp9s0 state: down mac: Card-3: Atmel usb-ID: 003-002 IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A Drives: HDD Total Size: 2000.4GB (51.6% used) ID-1: USB /dev/sda model: TOURO_S size: 1000.2GB ID-2: /dev/sdb model: Crucial_CT1024MX size: 1000.2GB ID-3: /dev/mmcblk0 model: N/A size: 63.9GB Optical: No optical drives detected. Partition: ID-1: / size: 442G used: 377G (90%) fs: ext4 dev: /dev/sdb5 ID-2: swap-1 size: 17.09GB used: 0.00GB (0%) fs: swap dev: /dev/sdb6 RAID: No RAID devices: /proc/mdstat, md_mod kernel module present Sensors: System Temperatures: cpu: 60.0C mobo: N/A gpu: 0.0:54C Fan Speeds (in rpm): cpu: N/A Info: Processes: 240 Uptime: 7 min Memory: 1624.0/15963.8MB Init: systemd runlevel: 5 Gcc sys: 5.4.0 Client: Shell (bash 4.3.461) inxi: 2.2.35

Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 2 times in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.

Источник

подключение Bluetooth: хост снижается

Я нахожусь на человечности 17.10 и пытающийся подключить мою гарнитуру Bluetooth QCY-Q19., который она может соединить, но каждый раз, когда я пытаюсь соединиться, я получаю эту ошибку Connection Failed: blueman.bluez.errors.DBusFailedError: Host is down иногда это соединяется в течение нескольких секунд и затем перестало работать с той же ошибкой.

3 ответа

У меня была эта точно та же самая проблема прежде. То, что я закончил тем, что делал, не соединяло устройство, сбрасывая его, который решил проблему соединения. После этого я сохранил его как доверенное устройство и до сих пор не имел проблем с тех пор.

Можно также видеть эту ошибку, если устройство, с которым Вы пытаетесь соединиться, уже соединяется к чему-то еще. Например, мои наушники будут фиксироваться на мой телефон, если он будет иметь Bluetooth на, заставляя мой рабочий стол Ubuntu не удаться соединиться.

У меня была эта проблема в версии 20.04. Я отключил его от своего телефона, и проблема решена.

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Источник

IOException: Host is down in bluetooth connection

I have two android phone in Android4.1 May be I can call them phone A and phone B. Then I know the MAC address and uuid of phone A. So what I want to do is that,I plan to give the MAC address and uuid of phone A to phone B,and make B connect to A in bluetooth.So A is the bluetooth server,B is bluetooth client. But when I do it .The phone B said
W/System.err(18404): java.io.IOException: Host is down The code in phone A as server like that:

 private class AcceptThread extends Thread < private final BluetoothServerSocket mmServerSocket; public AcceptThread() < BluetoothServerSocket tmp = null; try < Method m = mBluetoothAdapter.getClass().getMethod("listenUsingRfcommOn", new Class[] ); tmp = (BluetoothServerSocket)m.invoke(mBluetoothAdapter, new Object[]); Log.i("liyufei","in server we begin at uuid = "+selfUuid); > catch (Exception e) < e.printStackTrace(); >mmServerSocket = tmp; > public void run() < BluetoothSocket socket = null; // Keep listening until exception occurs or a socket is returned Log.i("liyufei","listening is begin"); while (true) < try < Log.i("liyufei","wait. "); socket = mmServerSocket.accept(); >catch (IOException e) < e.printStackTrace(); break; >Log.i("liyufei","keep going socket is try to create"); if (socket != null) < Log.i("liyufei","server socket accept. "); mHandler.obtainMessage(MESSAGE_ACCEPT).sendToTarget(); try < mmServerSocket.close(); >catch (IOException e) < // TODO Auto-generated catch block e.printStackTrace(); >break; > Log.i("liyufei","socket is null"); > Log.i("liyufei","while is stop"); > /** Will cancel the listening socket, and cause the thread to finish */ public void cancel() < try < mmServerSocket.close(); Log.i("liyufei","we try to Close server!!"); >catch (IOException e) < e.printStackTrace(); >> > 

private class ConnectThread extends Thread < private final BluetoothSocket mmSocket; private final BluetoothDevice mmDevice; public ConnectThread(BluetoothDevice device) < BluetoothSocket tmp = null; mmDevice = device; Log.i("liyufei","new connect thread. "); try < Method m = mmDevice.getClass().getMethod("createRfcommSocket", new Class[] ); tmp = (BluetoothSocket) m.invoke(mmDevice,Integer.valueOf(25)); > catch (Exception e) < e.printStackTrace(); >mmSocket = tmp; > public void run() < mBluetoothAdapter.cancelDiscovery(); try < Log.i("liyufei","we try to connect. "); mmSocket.connect(); >catch (Exception connectException) < Log.i("liyufei","connect to server failed. "); connectException.printStackTrace(); try < mmSocket.close(); >catch (IOException closeException) < >return; > Log.i("liyufei","client has success connect. "); mHandler.obtainMessage(MESSAGE_CONNECT).sendToTarget(); > /** Will cancel an in-progress connection, and close the socket */ public void cancel() < try < mmSocket.close(); >catch (IOException e) < >> > 

Then I just can get IOException:Host is down after mmSocket.connect(); in phone B Who can help me. Thank you very much . The Log after test suggestion from @Waqas

09-25 14:31:26.587: I/liyufei(12453): new connect thread. 09-25 14:31:26.587: I/liyufei(12453): we begin in connect uuid = 66d77030-9982-42cf-88a7-272954408361 09-25 14:31:26.595: E/BluetoothService.cpp(308): stopDiscoveryNative: D-Bus error in StopDiscovery: org.bluez.Error.Failed (Invalid discovery session) 09-25 14:31:26.595: I/liyufei(12453): we try to connect. 09-25 14:31:26.900: D/PhoneStatusBar(389): disable: < expand* icons alerts ticker system_info back home recent clock >09-25 14:31:26.970: D/dalvikvm(520): GC_FOR_ALLOC freed 140K, 44% free 14337K/25415K, paused 20ms, total 20ms 09-25 14:31:26.986: I/dalvikvm-heap(520): Grow heap (frag case) to 17.297MB for 3409936-byte allocation 09-25 14:31:27.017: D/dalvikvm(520): GC_CONCURRENT freed  

rm -r ~/.config/pulse; pulseaudio -k 

sudo systemctl restart bluetooth 

sudo apt-get install pulseaudio-module-bluetooth pactl load-module module-bluetooth-discover 

pulseaudio --kill pulseaudio -vvv --start