首先，这不是硬件问题，它们在 Windows 10 上运行良好。
而且我没有 Fn 组合键来激活网络摄像头。
一个月前，我将 Ubuntu 移到了我的 SSD 驱动器上。在移动之前我可以使用网络摄像头。无论如何，我不确定这次移动是否是问题所在。
运行 Cheese 会出现错误Error during camera setup: No device found
我也尝试过运行 Guvcview 和 Depthsense（我的外部网络摄像头）界面，但仍然收到“未找到设备”之类的错误。
因此我检查了 askubuntu 中几乎所有类似的问题，但它们都没有帮助。
以下是我的输出，或许能提供一些线索：
sudo chmod 777 /dev/video*：
chmod: cannot access '/dev/video*': No such file or directory
lsusb：
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 5986:026a Acer, Inc
Bus 002 Device 002: ID 045e:07a5 Microsoft Corp. Wireless Receiver 1461C
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lspci：
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:16.3 Serial controller: Intel Corporation 8 Series HECI KT (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-LM (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 6 (rev e4)
00:1c.1 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01)
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
链接lspci-k输出
链接lsusb-v输出
链接消息输出
任何帮助都会让我高兴。