Nicolas Cordova's questions

我在台式机上通过蓝牙使用 powerbeats 3 耳机，每 2 天在启动后，我发现自己在调试为什么我的耳机似乎不再连接。

我已经使用了以下问题及其答案，并且每次可以使用：

• 蓝牙问题 Ubuntu 18.04 LTS
• 蓝牙在 Ubuntu 16.04 LTS 上不起作用

有些答案有时会起作用，有时将它们结合起来并重新启动我的系统似乎有神奇的帮助。

我的耳机不再通过蓝牙连接的症状：

• 使用 GUI，在单击连接开/关按钮将其打开时，它会立即自行关闭。
• 使用 bluetoothctl，删除设备，再次信任设备并尝试配对，直到它由于我的设备关闭而尝试配对而失败。

可能与其中一些软件包有关：

• 蓝兹 5.53
• libbluetooth3 5.53

我想帮助调试这个问题，我想我已经厌倦了每隔几天重启几次只是为了让我的耳机正常工作。

编辑：我正在使用 tp link ub 400 蓝牙适配器。

“lsusb”结果：

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 003: ID 1b1c:1b20 Corsair Corsair STRAFE RGB Gaming Keyboard
Bus 003 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

编辑2：与其他问题相比要澄清：

“hciconfig”结果：

hci0:   Type: Primary  Bus: USB
    BD Address: 00:1A:7D:DA:71:15  ACL MTU: 310:10  SCO MTU: 64:8
    UP RUNNING PSCAN ISCAN 
    RX bytes:718 acl:0 sco:0 events:54 errors:0
    TX bytes:3673 acl:0 sco:0 commands:53 errors:0

如您所见，与显示为 DOWN 的其他问题相比，我的设备显示正在运行。

两周前，我在我的 Amd Ryzen 5 1600 / Nvidia Gtx 1070 上安装了 Ubuntu 20.04，但 Ubuntu 不时完全冻结。

键盘和屏幕完全停止工作，鼠标有时能够继续移动。我试过使用神奇的 SysRq 键，但没有用。也尝试过alt+F1但也没有得到系统的任何响应。基本上我只需要按下电源按钮即可重新启动。

我怀疑Nvidia，但我不知道如何验证。

nvidia-smi显示驱动程序版本 440.100。

发现这些日志/var/log/Xorg.1.log.old显示我的计算机崩溃的时间。

[  1223.234] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-22ms), your system is too slow  
[  1223.234] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-35ms), your system is too slow  
[  1488.529] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-0ms), your system is too slow  
[  1488.529] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-13ms), your system is too slow  
[  5125.223] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-14ms), your system is too slow  
[  5125.223] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-27ms), your system is too slow  
[  6038.321] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-9ms), your system is too slow  
[  6206.894] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-3ms), your system is too slow  
[  6206.894] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-16ms), your system is too slow  
[  6409.650] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-9ms), your system is too slow  
[  6409.650] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-22ms), your system is too slow  
[ 10930.426] (EE) client bug: timer event2 debounce: scheduled expiry is in the past (-7ms), your system is too slow  
[ 10930.426] (EE) client bug: timer event2 debounce short: scheduled expiry is in the past (-20ms), your system is too slow  

free -h结果：

              total        used        free      shared  buff/cache   available
Mem:           15Gi       2.5Gi        11Gi       393Mi       1.9Gi        12Gi
Swap:         2.0Gi          0B       2.0Gi

sysctl vm.swappiness结果：

vm.swappiness = 60

sudo lshw -C memory结果：

  *-firmware                
       description: BIOS
       vendor: American Megatrends Inc.
       physical id: 0
       version: 1.L0
       date: 12/28/2018
       size: 64KiB
       capacity: 16MiB
       capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
  *-memory
       description: System Memory
       physical id: f
       slot: System board or motherboard
       size: 16GiB
     *-bank:0
          description: 2933 MHz (0.3 ns) [empty]
          product: Unknown
          vendor: Unknown
          physical id: 0
          serial: Unknown
          slot: DIMM 0
          clock: 2933MHz (0.3ns)
     *-bank:1
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2933 MHz (0.3 ns)
          product: CMK16GX4M2B3200C16
          vendor: Unknown
          physical id: 1
          serial: 00000000
          slot: DIMM 1
          size: 8GiB
          width: 64 bits
          clock: 2933MHz (0.3ns)
     *-bank:2
          description: 2933 MHz (0.3 ns) [empty]
          product: Unknown
          vendor: Unknown
          physical id: 2
          serial: Unknown
          slot: DIMM 0
          clock: 2933MHz (0.3ns)
     *-bank:3
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2933 MHz (0.3 ns)
          product: CMK16GX4M2B3200C16
          vendor: Unknown
          physical id: 3
          serial: 00000000
          slot: DIMM 1
          size: 8GiB
          width: 64 bits
          clock: 2933MHz (0.3ns)
  *-cache:0
       description: L1 cache
       physical id: 11
       slot: L1 - Cache
       size: 576KiB
       capacity: 576KiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=1
  *-cache:1
       description: L2 cache
       physical id: 12
       slot: L2 - Cache
       size: 3MiB
       capacity: 3MiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=2
  *-cache:2
       description: L3 cache
       physical id: 13
       slot: L3 - Cache
       size: 16MiB
       capacity: 16MiB
       clock: 1GHz (1.0ns)
       capabilities: pipeline-burst internal write-back unified
       configuration: level=3

grep -i swap /etc/fstab结果：

/swapfile                                 none            swap    sw              0       0

sudo dmidecode -s bios-version结果：

1.L0

添加软件和更新屏幕截图

8月6日更新：