没有在戴尔5500和Ubuntu 20.04上工作的摄像头

Question

我已经在戴尔5500笔记本电脑上安装了Ubuntu20.04。唯一不起作用的就是摄像头。我找到了戴尔的指南：https://www.dell.com/support/article/en-uk/sln298412/a-guide-to-webcams-on-dell-notebook-and-desktop-pcs-with-ubuntu-operating-systems?lang=en

我找不到集成摄像头的USB ID。我可以用lsusb -v找到供应商id：

 Bus 001 Device 004: ID 0bda:58fd Realtek Semiconductor Corp. Integrated_Webcam_HD
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.01
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x0bda Realtek Semiconductor Corp.
  idProduct          0x58fd 
  bcdDevice           86.16
  iManufacturer           3 
  iProduct                1 
  iSerial                 2 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0471
    bNumInterfaces          4
    bConfigurationValue     1
    iConfiguration          4 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    ** UNRECOGNIZED:  28 ff 42 49 53 54 00 01 06 16 10 00 00 00 00 00 01 17 f4 01 02 18 f4 01 03 19 f4 01 04 1a f4 01 05 1b f4 01 06 1c e8 03

lsusb返回：

    Bus 002 Device 002: ID 0451:8340 Texas Instruments, Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0a5c:5843 Broadcom Corp. 58200
Bus 001 Device 004: ID 0bda:58fd Realtek Semiconductor Corp. Integrated_Webcam_HD
Bus 001 Device 003: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. JM20329 SATA Bridge
Bus 001 Device 009: ID 0451:82ff Texas Instruments, Inc. 
Bus 001 Device 008: ID 04ca:005d Lite-On Technology Corp. StoreJet Transcend
Bus 001 Device 007: ID 0451:8342 Texas Instruments, Inc. 
Bus 001 Device 002: ID 047d:2048 Kensington Orbit Trackball with Scroll Ring
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg产出：

   [    3.153060] uvcvideo: Found UVC 1.50 device Integrated_Webcam_HD (0bda:58fd)
[    3.161691] uvcvideo 1-6:1.0: Entity type for entity Microsoft Extended Controls Uni was not initialized!
[    3.161693] uvcvideo 1-6:1.0: Entity type for entity Realtek Extended Controls Unit was not initialized!
[    3.161694] uvcvideo 1-6:1.0: Entity type for entity Extension 4 was not initialized!
[    3.161696] uvcvideo 1-6:1.0: Entity type for entity Extension 7 was not initialized!
[    3.161697] uvcvideo 1-6:1.0: Entity type for entity Processing 2 was not initialized!
[    3.161698] uvcvideo 1-6:1.0: Entity type for entity Camera 1 was not initialized!
[    3.348081] uvcvideo: Found UVC 1.50 device Integrated_Webcam_HD (0bda:58fd)
[    3.350711] uvcvideo 1-6:1.2: Entity type for entity Microsoft Extended Controls Uni was not initialized!
[    3.350712] uvcvideo 1-6:1.2: Entity type for entity Extension 9 was not initialized!
[    3.350713] uvcvideo 1-6:1.2: Entity type for entity Extension 11 was not initialized!
[    3.350714] uvcvideo 1-6:1.2: Entity type for entity Camera 8 was not initialized!
[    3.350807] usbcore: registered new interface driver uvcvideo

我能帮你找一下USB ID吗?或者，还有其他办法让摄像头正常工作吗？

Answer 1

在我的例子中，我甚至看不到在lsusb中检测到的设备，并且系统日志对uvc/UVC/Webcam保持沉默。

Answer 2

我对戴尔纬度E5540也有同样的问题。

检查它是否是硬件问题

1. 重新启动ubuntu20.04并在黑色启动屏幕上按f12
2. 在“其他选项”下选择“诊断”
3. 在Dell ePSA下，选择configurations TAB并检查麦克风相机引导选项= not (如果是这样的话，请继续执行步骤4 )。
4. 打开屏幕，检查相机是否正确连接。在我的例子中，它被断开了。