我有一个 Wi-Fi 网络，其中有两台笔记本电脑和一台移动设备。
一台笔记本电脑和一台移动设备可以正常看到我的 chromecast 设备，但一台笔记本电脑却不能（戴尔 xps 9500）。
两台笔记本电脑都运行 ubuntu，它们都连接到同一个 wifi 网络（5ghz，只有一个）。它们在同一个房间里。
我尝试过打开和关闭我的投射设备和路由器，但一切照旧。还尝试过“忘记”WiFi 网络。
还尝试了以下说法：当我尝试投射到 Chromecast 时，Chrome 浏览器显示“未找到设备”
也不起作用。
笔记本电脑上的 lspci 输出：
00:00.0 Host bridge: Intel Corporation 10th Gen Core Processor Host Bridge/DRAM Registers (rev 02)
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 02)
00:02.0 VGA compatible controller: Intel Corporation CometLake-H GT2 [UHD Graphics] (rev 05)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 02)
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 PCH Thermal Controller
00:13.0 Serial controller: Intel Corporation Device 06fc
00:14.0 USB controller: Intel Corporation Comet Lake USB 3.1 xHCI Host Controller
00:14.2 RAM memory: Intel Corporation Comet Lake PCH Shared SRAM
00:14.3 Network controller: Intel Corporation Comet Lake PCH CNVi WiFi
00:15.0 Serial bus controller: Intel Corporation Comet Lake PCH Serial IO I2C Controller #0
00:15.1 Serial bus controller: Intel Corporation Comet Lake PCH Serial IO I2C Controller #1
00:16.0 Communication controller: Intel Corporation Comet Lake HECI Controller
00:1c.0 PCI bridge: Intel Corporation Device 06b8 (rev f0)
00:1c.6 PCI bridge: Intel Corporation Device 06be (rev f0)
00:1d.0 PCI bridge: Intel Corporation Comet Lake PCI Express Root Port #9 (rev f0)
00:1e.0 Communication controller: Intel Corporation Comet Lake PCH Serial IO UART Host Controller #0
00:1f.0 ISA bridge: Intel Corporation Device 068e
00:1f.3 Audio device: Intel Corporation Comet Lake PCH cAVS
00:1f.4 SMBus: Intel Corporation Comet Lake PCH SMBus Controller
00:1f.5 Serial bus controller: Intel Corporation Comet Lake PCH SPI Controller
01:00.0 3D controller: NVIDIA Corporation TU117M [GeForce GTX 1650 Ti Mobile] (rev a1)
02:00.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] (rev 06)
03:00.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] (rev 06)
03:01.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] (rev 06)
03:02.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] (rev 06)
03:04.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018] (rev 06)
04:00.0 System peripheral: Intel Corporation JHL7540 Thunderbolt 3 NHI [Titan Ridge 4C 2018] (rev 06)
38:00.0 USB controller: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] (rev 06)
6c:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5260 PCI Express Card Reader (rev 01)
6d:00.0 Non-Volatile memory controller: Intel Corporation SSD Pro 7600p/760p/E 6100p Series (rev 03)