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Ubuntu 20.04 未检测到蓝牙。“dmesg | grep -i blue”和“lsusb | grep Bluetooth”不输出任何内容

tag-icon • tag-icon networking drivers 20.04 bluetooth hp
Ubuntu 20.04 未检测到蓝牙。“dmesg | grep -i blue”和“lsusb | grep Bluetooth”不输出任何内容

我最近在笔记本电脑上安装了 Ubuntu 20.04 双启动，但蓝牙无法正常工作。不过，我可以在 Windows 中使用它。Ubuntu
中的蓝牙设置页面显示：
No Bluetooth Found - Plug in a dongle to use Bluetooth

dmesg | grep -i blue并且lsusb | grep不返回任何输出。

这是输出lsusb：

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 13d3:56c9 IMC Networks HP TrueVision HD Camera
Bus 001 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

请帮忙

编辑：
计算机：HP Laptop 15t-dw100
输出lspci：

00:00.0 Host bridge: Intel Corporation Device 9b61 (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics (rev 02)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 0c)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Comet Lake Thermal Subsytem
00:14.0 USB controller: Intel Corporation Device 02ed
00:14.2 RAM memory: Intel Corporation Device 02ef
00:15.0 Serial bus controller [0c80]: Intel Corporation Serial IO I2C Host Controller
00:16.0 Communication controller: Intel Corporation Comet Lake Management Engine Interface
00:17.0 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode]
00:1c.0 PCI bridge: Intel Corporation Device 02bc (rev f0)
00:1d.0 PCI bridge: Intel Corporation Device 02b0 (rev f0)
00:1d.1 PCI bridge: Intel Corporation Device 02b1 (rev f0)
00:1d.4 PCI bridge: Intel Corporation Device 02b4 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Device 0284
00:1f.3 Audio device: Intel Corporation Device 02c8
00:1f.4 SMBus: Intel Corporation Device 02a3
00:1f.5 Serial bus controller [0c80]: Intel Corporation Comet Lake SPI (flash) Controller
01:00.0 3D controller: NVIDIA Corporation GP108M [GeForce MX250] (rev a1)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
04:00.0 Non-Volatile memory controller: Sandisk Corp Device 5009 (rev 01)

答案1

问题终于解决了。
问题出在 RTL8821CE 芯片上，正如 @matigo 指出的那样，
安装开源驱动程序tomaspinho 解决了 Wi-Fi 问题，但蓝牙仍然无法使用。
运行此命令解决了蓝牙问题：

sudo modprobe btrtl
sudo systemctl restart bluetooth
sudo bluetoothctl
>power on

希望这对其他人有帮助。
如果这不能解决问题，我建议通过关闭与蓝牙相关的问题在 tomaspinho 的 RTL8821CE GitHub repo 中。

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