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USB 攝影機 (Logitech) 停止運作，直到重新連接

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USB 攝影機 (Logitech) 停止運作，直到重新連接

我有配備 Ubuntu 18.04 和 Logitech BRIO 攝影機的戴爾桌上型電腦。它在 Ubuntu 16.04 上運行良好，並且在升級到 18.04 後的幾週內運行良好，拍攝了數百張照片。然後從一兩週前開始，它會進行幾次拍攝，有時 30 個，有時 50 個，然後停止工作，直到斷開連接並重新連接。我有另一台戴爾桌上型電腦，也配備 Ubuntu 18.04 和相同的攝像頭，但該台式機沒有互聯網連接，也沒有更新。那個繼續工作得很好。我更換了相機，問題仍然出在這台電腦。

我重新連接相機並執行此腳本進行測試，使用 fswebcam 拍攝照片並另存為 jpg：

#!/bin/bash

for index in {0..100}
do
    echo shot $index
    echo Time: `date +"%Y-%m-%d %T"`
    fswebcam -d v4l2:/dev/video0 -r  4096x2160 --jpeg -1 --no-banner -S 9 --verbose temp/shot.jpg
    sleep 1
done
exit

它工作正常 20 到 50 次，然後 fswebcam 說“無法找到兼容的調色板格式。”這是連續兩次射擊的輸出，最後一次成功，第一次失敗：

shot 62
Time: 2021-11-30 11:26:17
--- Opening v4l2:/dev/video0...
>>> Using 'v4l2' source module.
/dev/video0 opened.
src_v4l2_get_capability,87: /dev/video0 information:
src_v4l2_get_capability,88: cap.driver: "uvcvideo"
src_v4l2_get_capability,89: cap.card: "Logitech BRIO"
src_v4l2_get_capability,90: cap.bus_info: "usb-0000:00:14.0-8"
src_v4l2_get_capability,91: cap.capabilities=0x84200001
src_v4l2_get_capability,92: - VIDEO_CAPTURE
src_v4l2_get_capability,103: - STREAMING
No input was specified, using the first.
src_v4l2_set_input,181: /dev/video0: Input 0 information:
src_v4l2_set_input,182: name = "Camera 1"
src_v4l2_set_input,183: type = 00000002
src_v4l2_set_input,185: - CAMERA
src_v4l2_set_input,186: audioset = 00000000
src_v4l2_set_input,187: tuner = 00000000
src_v4l2_set_input,188: status = 00000000
src_v4l2_set_pix_format,520: Device offers the following V4L2 pixel formats:
src_v4l2_set_pix_format,533: 0: [0x56595559] 'YUYV' (YUYV 4:2:2)
src_v4l2_set_pix_format,533: 1: [0x47504A4D] 'MJPG' (Motion-JPEG)
src_v4l2_set_pix_format,533: 2: [0x3231564E] 'NV12' (Y/CbCr 4:2:0)
Using palette MJPEG
src_v4l2_set_mmap,672: mmap information:
src_v4l2_set_mmap,673: frames=4
src_v4l2_set_mmap,722: 0 length=17694720
src_v4l2_set_mmap,722: 1 length=17694720
src_v4l2_set_mmap,722: 2 length=17694720
src_v4l2_set_mmap,722: 3 length=17694720
--- Capturing frame...
Skipping 9 frames...
Capturing 1 frames...
Captured 10 frames in 0.31 seconds. (32 fps)
--- Processing captured image...
Setting output format to JPEG, quality -1
Disabling banner.
Writing JPEG image to 'temp/shot.jpg'.
shot 63
Time: 2021-11-30 11:26:29
--- Opening v4l2:/dev/video0...
>>> Using 'v4l2' source module.
/dev/video0 opened.
src_v4l2_get_capability,87: /dev/video0 information:
src_v4l2_get_capability,88: cap.driver: "uvcvideo"
src_v4l2_get_capability,89: cap.card: "Logitech BRIO"
src_v4l2_get_capability,90: cap.bus_info: "usb-0000:00:14.0-8"
src_v4l2_get_capability,91: cap.capabilities=0x84200001
src_v4l2_get_capability,92: - VIDEO_CAPTURE
src_v4l2_get_capability,103: - STREAMING
No input was specified, using the first.
src_v4l2_set_input,181: /dev/video0: Input 0 information:
src_v4l2_set_input,182: name = "Camera 1"
src_v4l2_set_input,183: type = 00000002
src_v4l2_set_input,185: - CAMERA
src_v4l2_set_input,186: audioset = 00000000
src_v4l2_set_input,187: tuner = 00000000
src_v4l2_set_input,188: status = 00000000
src_v4l2_set_pix_format,520: Device offers the following V4L2 pixel formats:
src_v4l2_set_pix_format,533: 0: [0x56595559] 'YUYV' (YUYV 4:2:2)
src_v4l2_set_pix_format,533: 1: [0x47504A4D] 'MJPG' (Motion-JPEG)
src_v4l2_set_pix_format,533: 2: [0x3231564E] 'NV12' (Y/CbCr 4:2:0)
Unable to find a compatible palette format.

dmesg -T 顯示這一點，從相機重新連接時開始：

[Tue Nov 30 11:18:03 2021] usb 2-8: USB disconnect, device number 7
[Tue Nov 30 11:18:10 2021] usb 2-8: new SuperSpeed USB device number 8 using xhci_hcd
[Tue Nov 30 11:18:10 2021] usb 2-8: New USB device found, idVendor=046d, idProduct=085e
[Tue Nov 30 11:18:10 2021] usb 2-8: New USB device strings: Mfr=0, Product=2, 
SerialNumber=3
[Tue Nov 30 11:18:10 2021] usb 2-8: Product: Logitech BRIO
[Tue Nov 30 11:18:10 2021] usb 2-8: SerialNumber: 93004248
[Tue Nov 30 11:18:10 2021] uvcvideo: Found UVC 1.00 device Logitech BRIO (046d:085e)
[Tue Nov 30 11:18:10 2021] input: Logitech BRIO as 
/devices/pci0000:00/0000:00:14.0/usb2/2-8/2-8:1.0/input/input20
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 24000
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 32000
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 48000
[Tue Nov 30 11:18:10 2021] input: Logitech BRIO as /devices/pci0000:00/0000:00:14.0/usb2/2-8/2-8:1.4/0003:046D:085E.0006/input/input21
[Tue Nov 30 11:18:10 2021] hid-generic 0003:046D:085E.0006: input,hidraw0: USB HID v1.11 Device [Logitech BRIO] on usb-0000:00:14.0-8/input4
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 48000
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 48000
[Tue Nov 30 11:18:10 2021] usb 2-8: current rate 16000 is different from the runtime rate 48000
[Tue Nov 30 11:26:21 2021] usb 2-8: Set SEL for device-initiated U1 failed.
[Tue Nov 30 11:26:21 2021] usb 2-8: Set SEL for device-initiated U2 failed.
[Tue Nov 30 11:26:27 2021] usb 2-8: Set SEL for device-initiated U1 failed.
[Tue Nov 30 11:26:27 2021] usb 2-8: Set SEL for device-initiated U2 failed.
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[Tue Nov 30 11:26:28 2021] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).

最後一件事重複了很多次。

我已經嘗試了很多次，但總是以同樣的方式失敗，從“usb 2-8：為設備啟動的 U1 設定 SEL 失敗”開始。

我怎樣才能找到並解決這個問題？

答案1

正如評論所述，我在 Windows 10 上也遇到了類似的問題。我切換到3.2 USB端口，一個多小時以來沒有斷開連接......我在幾個地方讀過（像這兒）網路攝影機只能在使用預設/羅技電纜或完全相容的電纜（至少需要 USB3 480mbs）的情況下以 4K 格式正常工作。因此將其插入 USB2 確實可能會出現問題。當你使用時-r 4096x2160，你的問題可能是相同的嗎？

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