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Logitech StreamcamがManjaroのすべてのモードを提供しない

1080p60ウェブカメラ入力を取得するためにLogitech Streamcamを購入し、Linuxで動作するウェブカメラに慣れていました。動作しますが、非圧縮ビデオの場合、設定できる最良のモードは1080pとすべて5 fpsです。このカメラがサポートしている1080p60モードを使用できません（レンズの上にそのように表示されています）。圧縮されたMJPEGでも、1920x1080では30fpsにしかなりません。 v4l2-ctlのフラットアウトは、高いfps値を設定する試みを拒否し、5fpsにフォールバックします。

dmesgをプラグインすると、次のように表示されます。

[  415.860457] usb 3-4: New USB device found, idVendor=046d, idProduct=0893, bcdDevice= 0.17
[  415.860460] usb 3-4: New USB device strings: Mfr=0, Product=2, SerialNumber=3
[  415.860462] usb 3-4: Product: Logitech StreamCam
[  415.860463] usb 3-4: SerialNumber: 599D4A05
[  415.908735] uvcvideo: Found UVC 1.00 device Logitech StreamCam (046d:0893)
[  415.919323] uvcvideo 3-4:1.0: Entity type for entity Processing 3 was not initialized!
[  415.919326] uvcvideo 3-4:1.0: Entity type for entity Extension 14 was not initialized!
[  415.919327] uvcvideo 3-4:1.0: Entity type for entity Extension 6 was not initialized!
[  415.919329] uvcvideo 3-4:1.0: Entity type for entity Extension 8 was not initialized!
[  415.919330] uvcvideo 3-4:1.0: Entity type for entity Extension 9 was not initialized!
[  415.919332] uvcvideo 3-4:1.0: Entity type for entity Extension 10 was not initialized!
[  415.919333] uvcvideo 3-4:1.0: Entity type for entity Extension 11 was not initialized!
[  415.919334] uvcvideo 3-4:1.0: Entity type for entity Camera 1 was not initialized!
[  415.919400] input: Logitech StreamCam as /devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:08.0/0000:04:00.3/usb3/3-4/3-4:1.0/input/input19
[  415.942811] usb 3-4: current rate 16000 is different from the runtime rate 24000
[  415.958807] usb 3-4: current rate 16000 is different from the runtime rate 32000
[  415.974807] usb 3-4: current rate 16000 is different from the runtime rate 48000
[  415.997674] hid-generic 0003:046D:0893.0006: hiddev0,hidraw0: USB HID v1.11 Device [Logitech StreamCam] on usb-0000:04:00.3-4/input5
[  416.646810] usb 3-4: current rate 16000 is different from the runtime rate 48000
[  416.678806] usb 3-4: current rate 16000 is different from the runtime rate 48000
[  416.710805] usb 3-4: current rate 16000 is different from the runtime rate 48000

これはv4l2-ctlからです：

ioctl: VIDIOC_ENUM_FMT
    Type: Video Capture

    [0]: 'YUYV' (YUYV 4:2:2)
        Size: Discrete 640x480
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 176x144
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 320x240
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 424x240
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 640x360
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 848x480
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 960x540
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1280x720
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1600x896
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1920x1080
            Interval: Discrete 0.200s (5.000 fps)
    [1]: 'MJPG' (Motion-JPEG, compressed)
        Size: Discrete 640x480
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 176x144
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 320x240
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 424x240
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 640x360
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 848x480
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 960x540
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1280x720
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1600x896
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)
        Size: Discrete 1920x1080
            Interval: Discrete 0.033s (30.000 fps)
            Interval: Discrete 0.042s (24.000 fps)
            Interval: Discrete 0.050s (20.000 fps)
            Interval: Discrete 0.067s (15.000 fps)
            Interval: Discrete 0.100s (10.000 fps)
            Interval: Discrete 0.133s (7.500 fps)
            Interval: Discrete 0.200s (5.000 fps)

最後に、私は両方を持っています/dev/video0および/dev/video1カメラを差し込んだ後、ただしvideo0 動作します。

lsusb -vvv私はこれを得ます：

Bus 004 Device 003: ID 046d:0893 Logitech, Inc. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.20
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0         9
  idVendor           0x046d Logitech, Inc.
  idProduct          0x0893 
  bcdDevice            3.17
  iManufacturer           0 
  iProduct                2 Logitech StreamCam
[...]
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x00
    wSpeedsSupported   0x000e
      Device can operate at Full Speed (12Mbps)
      Device can operate at High Speed (480Mbps)
      Device can operate at SuperSpeed (5Gbps)

最後に、最近の5.6カーネルを使用しています。

$ uname -r
5.6.3-2-MANJARO
linuxusbwebcamlogitech-webcam
4
Anpan

これは、LinuxでのUVC（USBビデオクラス）v1.5の完全なサポートの欠如と関係があると思います。 VCのWikipediaページ はLinuxサポートについて次のように述べています。

Linuxカーネルバージョン4.5でUVC 1.5デバイスの検出が導入されましたが、UVC 1.5固有の機能または特定のUVC 1.5デバイスのドライバーでのサポートは追加されておらず、MPEG-2 TS、H.264、およびVP8ペイロードはまだサポートされていません。その結果、UVC 1.1もサポートする一部のUVC 1.5デバイスは正しく動作します。

ログ情報に、カメラがUVC v1.00として検出されたことが示されています。 60fpsにはMPEG-2 TSのサポートが必要だと思います。

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ph0t0nix