我刚刚在 MSI GE66 笔记本电脑上全新安装了 Ubuntu 20.10。出于某种原因，蓝牙快速切换并关闭。以下视频演示了正在发生的事情： https://youtu.be/Y7kT3Nkxkag
此外，当我运行时，htop它显示systemd-udevd使用了 100% 的 CPU（我机器上的 16 个线程之一）。运行过程中udevadm monitor不断打印以下内容：
KERNEL[14196.456057] add /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14196.457305] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14196.457336] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14196.457376] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24105 (rfkill)
KERNEL[14196.457501] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14196.457517] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14196.457541] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14196.457568] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14196.458030] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
UDEV [14196.458060] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
UDEV [14196.514604] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14196.614800] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24105 (rfkill)
KERNEL[14196.614815] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14196.614824] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14196.614846] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14196.614857] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14196.614867] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14196.625238] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14196.625276] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14196.670293] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill4297 (rfkill)
KERNEL[14197.044037] add /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14197.045068] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.045100] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14197.045128] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24106 (rfkill)
KERNEL[14197.045203] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.045243] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.045273] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.045327] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14197.045651] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
UDEV [14197.045683] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.202815] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24106 (rfkill)
KERNEL[14197.202852] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14197.202862] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.202870] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.202895] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.202904] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.213432] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14197.213468] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14197.632034] add /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14197.633245] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.633276] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14197.633284] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24107 (rfkill)
KERNEL[14197.633380] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.633536] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.633572] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.633583] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14197.633872] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14197.650160] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill4297 (rfkill)
UDEV [14197.650484] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.790798] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24107 (rfkill)
KERNEL[14197.790837] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14197.790862] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.790890] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.790915] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14197.790924] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14197.801383] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14197.801418] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
UDEV [14197.804361] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
UDEV [14197.804580] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
UDEV [14197.957591] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
UDEV [14198.111830] remove /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14198.220004] add /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
KERNEL[14198.221202] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14198.221232] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0 (bluetooth)
KERNEL[14198.221242] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0/rfkill24108 (rfkill)
KERNEL[14198.221291] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0 (usb)
KERNEL[14198.221391] add /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14198.221427] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.1 (usb)
KERNEL[14198.221461] bind /devices/pci0000:00/0000:00:14.0/usb1/1-14 (usb)
到底发生了什么？我该如何解决这个问题？
编辑
这是有关我的系统的更多信息。
输出sudo lshw | grep product
product: GE66 Raider 10UH (1542.1)
product: MS-1542
product: HMAA2GS6AJR8N-XN
product: HMAA2GS6AJR8N-XN
product: Intel(R) Core(TM) i7-10870H CPU @ 2.20GHz
product: 10th Gen Core Processor Host Bridge/DRAM Registers
product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)
product: NVIDIA Corporation
product: NVIDIA Corporation
product: UHD Graphics
product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
product: Comet Lake PCH Thermal Controller
product: Comet Lake USB 3.1 xHCI Host Controller
product: xHCI Host Controller
product: SteelSeries KLC
product: SteelSeries ALC
product: Integrated Camera
product: xHCI Host Controller
product: Comet Lake PCH Shared SRAM
product: Comet Lake PCH Serial IO I2C Controller #0
product: Comet Lake PCH Serial IO I2C Controller #2
product: Comet Lake HECI Controller
product: Comet Lake PCI Express Root Port #17
product: ASMedia Technology Inc.
product: xHCI Host Controller
product: xHCI Host Controller
product: Comet Lake PCI Express Root Port #9
product: Sandisk Corp
product: WDC PC SN730 SDBPNTY-1T00-1032
product: Intel Corporation
product: Intel Corporation
product: Intel Corporation
product: Intel Corporation
product: Intel Corporation
product: RTS525A PCI Express Card Reader
product: Comet Lake LPC Controller
product: Comet Lake PCH cAVS
product: Comet Lake PCH SMBus Controller
product: Comet Lake PCH SPI Controller
product: PnP device PNP0c02
product: PnP device MSI0007
product: PnP device PNP0f13
product: PnP device PNP0c02
product: PnP device PNP0b00
product: PnP device INT3f0d
product: PnP device PNP0c02
product: PnP device PNP0c02
product: PnP device PNP0c02
product: PnP device PNP0c02
product: To Be Filled By O.E.M.
输出spci -knn | grep Net -A3; lsusb
04:00.0 Network controller [0280]: Intel Corporation Device [8086:2725] (rev 1a)
Subsystem: Intel Corporation Device [8086:0024]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
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 002: ID 1038:1122 SteelSeries ApS SteelSeries KLC
Bus 001 Device 067: ID 8087:0032 Intel Corp.
Bus 001 Device 004: ID 5986:1160 Acer, Inc Integrated Camera
Bus 001 Device 003: ID 1038:1132 SteelSeries ApS SteelSeries ALC
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
编辑2
即使我无法让蓝牙工作也没关系。我完全禁用它也没关系，毕竟我只是不想让它像现在这样消耗 CPU。
编辑3
我刚刚全新安装了 Ubuntu 20.04，遇到了同样的问题。
答案1
尝试了很多方法后，我可以通过以下步骤完全禁用蓝牙：
sudo vim /etc/modprobe.d/blacklist.conf
然后添加以下行：
blacklist btusb
然后最后重新启动。
蓝牙不再打开和关闭，也不再消耗 CPU - 虽然这不是一个很好的解决方案，因为它最终涉及禁用蓝牙。
答案2
我在使用 5.10.24 内核的 Ubuntu 20.04.02 上遇到了同样的问题。
插入以下行/etc/udev/rules.d/81-bluetooth-hci.rules解决了我的问题：
SUBSYSTEM=="usb", ATTRS{idVendor}=="8087", ATTRS{idProduct}=="0032", ATTR{authorized}="0"
基本上，通过上述设置您可以禁用英特尔蓝牙适配器。