로지텍 C920 두개를
USB 3.0 허브에 (iptime UH308) 연결해보고
[193337.869903] usb 1-3.2: new high-speed USB device number 11 using xhci_hcd [193340.200843] usb 1-3.2: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 [193340.200861] usb 1-3.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [193340.200868] usb 1-3.2: Product: HD Pro Webcam C920 [193340.200873] usb 1-3.2: SerialNumber: 06379F2F [193340.202467] usb 1-3.2: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) [193340.441788] usb 1-3.3: new high-speed USB device number 12 using xhci_hcd [193342.792576] usb 1-3.3: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 [193342.792582] usb 1-3.3: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [193342.792584] usb 1-3.3: Product: HD Pro Webcam C920 [193342.792586] usb 1-3.3: SerialNumber: 36CA5F6F [193342.793755] usb 1-3.3: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) [193342.993739] usb 1-3.2: reset high-speed USB device number 11 using xhci_hcd [193343.106011] usb 1-3.2: device firmware changed [193343.106533] snd-usb-audio: probe of 1-3.2:1.2 failed with error -22 [193343.107009] usb 1-3.2: USB disconnect, device number 11 [193343.253588] usb 1-3.2: new high-speed USB device number 13 using xhci_hcd [193343.328685] usbcore: registered new interface driver snd-usb-audio [193344.202429] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193344.202437] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193344.202495] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193344.202498] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193345.612601] usb 1-3.2: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 [193345.612619] usb 1-3.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [193345.612626] usb 1-3.2: Product: HD Pro Webcam C920 [193345.612631] usb 1-3.2: SerialNumber: 06379F2F [193345.614384] usb 1-3.2: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) [193353.261631] usb 1-3.3: reset high-speed USB device number 12 using xhci_hcd [193353.459187] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193353.459194] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193353.459258] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193353.459261] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193391.503133] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193391.503140] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193391.503192] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193391.503194] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193398.045306] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193398.045314] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193398.045367] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [193398.045370] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [193411.769158] usb 1-3.3: Not enough bandwidth for new device state. [193411.769169] usb 1-3.3: Not enough bandwidth for altsetting 11 [193449.070234] usb 1-3.2: Not enough bandwidth for new device state. [193449.070244] usb 1-3.2: Not enough bandwidth for altsetting 11 |
해당 허브의 USB2.0에 연결도 해보는데
[193495.517035] usb 1-3.4.4: Not enough bandwidth for new device state. [193495.517042] usb 1-3.4.4: Not enough bandwidth for altsetting 11 |
USB2.0이던 3.0이던
Full HD 25p 두 카메라 입력은 무리인 듯
UVC 관련 옵션이 있는 것 같은데
나중에 USB2.0 구형 시스템에서 동일 웹캠으로 다시 시도 해봐야 할 듯.
[링크 : https://superuser.com/questions/902800/how-to-limit-the-usb-bandwidth-a-device-can-allocate-on-linux]
+2024.05.10
USB 2.0 허브에 카메라 두개 달고 해보니 동일하게 발생한다.
그냥 예전에 사용했던 UVC 카메라가 최대 대역폭을 혼자 다 쓰게 설정되어서 그런건가 싶기도 하고..
[266776.841702] usb 1-2: new high-speed USB device number 20 using xhci_hcd [266776.989984] usb 1-2: New USB device found, idVendor=1a40, idProduct=0101, bcdDevice= 1.11 [266776.989992] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [266776.989995] usb 1-2: Product: USB 2.0 Hub [266776.991860] hub 1-2:1.0: USB hub found [266776.991894] hub 1-2:1.0: 4 ports detected [266777.377698] usb 1-2.1: new high-speed USB device number 21 using xhci_hcd [266779.824775] usb 1-2.1: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 [266779.824791] usb 1-2.1: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [266779.824797] usb 1-2.1: Product: HD Pro Webcam C920 [266779.824802] usb 1-2.1: SerialNumber: 06379F2F [266779.826472] usb 1-2.1: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) [266780.233582] usb 1-2.2: new high-speed USB device number 22 using xhci_hcd [266782.672670] usb 1-2.2: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 [266782.672686] usb 1-2.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [266782.672692] usb 1-2.2: Product: HD Pro Webcam C920 [266782.672697] usb 1-2.2: SerialNumber: 36CA5F6F [266782.674285] usb 1-2.2: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) [266783.181584] usb 1-2.1: reset high-speed USB device number 21 using xhci_hcd [266786.790072] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266786.790078] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266786.790135] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266786.790137] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266793.966044] usb 1-2.2: reset high-speed USB device number 22 using xhci_hcd [266794.252230] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266794.252236] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266794.252289] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266794.252291] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266805.426359] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266805.426364] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266805.426427] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266805.426429] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266816.380206] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266816.380213] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266816.380278] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI [266816.380281] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 [266831.010139] usb 1-2.1: Not enough bandwidth for new device state. [266831.010146] usb 1-2.1: Not enough bandwidth for altsetting 11 |
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