I have an HD Pro Webcam C920 which has stopped working on my main system (amito), which doesn't recognize it and disconnects. I have another system (oaklandweather), which does recognize it and remains connected. Attached are the relevant extracts from the two system logs, starting at the time the camera was plugged into a USB socket; each extract is preceded by system info. Can anyone tell me what is going on and how to get the camera working?
The most important difference between the two systems is that amito runs X11 but oaklandweather runs Wayland. Otherwise they look very
similar, except for the hardware.
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Many Thanks - Jonathan Ryshpan <jonrysh@xxxxxxxxxxx> This sentence have three erors.
THIS DOESN'T WORK Operating System: Fedora 34 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.15.10-100.fc34.x86_64 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 4600 Dec 23 14:28:09 amito kernel: usb 3-5: new high-speed USB device number 27 using xhci_hcd Dec 23 14:28:12 amito kernel: usb 3-5: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 Dec 23 14:28:12 amito kernel: usb 3-5: New USB device strings: Mfr=0, Product=2, SerialNumber=1 Dec 23 14:28:12 amito kernel: usb 3-5: Product: HD Pro Webcam C920 Dec 23 14:28:12 amito kernel: usb 3-5: SerialNumber: 0A6F9F5F Dec 23 14:28:12 amito kernel: usb 3-5: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) Dec 23 14:28:12 amito kernel: input: HD Pro Webcam C920 as /devices/pci0000:00/0000:00:14.0/usb3/3-5/3-5:1.0/input/input99 Dec 23 14:28:12 amito mtp-probe[55551]: checking bus 3, device 27: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-5" Dec 23 14:28:12 amito mtp-probe[55551]: bus: 3, device: 27 was not an MTP device Dec 23 14:28:12 amito mtp-probe[55591]: checking bus 3, device 27: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-5" Dec 23 14:28:12 amito mtp-probe[55591]: bus: 3, device: 27 was not an MTP device Dec 23 14:28:12 amito kdeconnectd[2925]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor" Dec 23 14:28:12 amito plasmashell[2778]: org.kde.plasma.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor" Dec 23 14:28:14 amito kernel: usb 3-5: USB disconnect, device number 27 Dec 23 14:28:14 amito kdeconnectd[2925]: org.kde.pulseaudio: No object for name "alsa_input.usb-046d_HD_Pro_Webcam_C920_0A6F9F5F-02.analog-stereo" Dec 23 14:28:14 amito kdeconnectd[2925]: org.kde.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor" Dec 23 14:28:14 amito plasmashell[2778]: org.kde.plasma.pulseaudio: No object for name "alsa_input.usb-046d_HD_Pro_Webcam_C920_0A6F9F5F-02.analog-stereo" Dec 23 14:28:14 amito plasmashell[2778]: org.kde.plasma.pulseaudio: No object for name "alsa_output.pci-0000_00_1b.0.analog-stereo.monitor" THIS DOES WORK Operating System: Fedora 34 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.15.10-100.fc34.x86_64 (64-bit) Graphics Platform: Wayland Processors: 2 × Intel® Pentium® CPU G2030 @ 3.00GHz Memory: 7.6 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 2500 Dec 23 14:16:59 OaklandWeather.localdomain kernel: usb 1-1.3: new high-speed USB device number 6 using ehci-pci Dec 23 14:17:01 OaklandWeather.localdomain kernel: usb 1-1.3: New USB device found, idVendor=046d, idProduct=082d, bcdDevice= 0.11 Dec 23 14:17:01 OaklandWeather.localdomain kernel: usb 1-1.3: New USB device strings: Mfr=0, Product=2, SerialNumber=1 Dec 23 14:17:01 OaklandWeather.localdomain kernel: usb 1-1.3: Product: HD Pro Webcam C920 Dec 23 14:17:01 OaklandWeather.localdomain kernel: usb 1-1.3: SerialNumber: 0A6F9F5F Dec 23 14:17:01 OaklandWeather.localdomain mtp-probe[49306]: checking bus 1, device 6: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3" Dec 23 14:17:01 OaklandWeather.localdomain mtp-probe[49306]: bus: 1, device: 6 was not an MTP device Dec 23 14:17:01 OaklandWeather.localdomain kernel: mc: Linux media interface: v0.10 Dec 23 14:17:01 OaklandWeather.localdomain kernel: videodev: Linux video capture interface: v2.00 Dec 23 14:17:01 OaklandWeather.localdomain kernel: usb 1-1.3: Found UVC 1.00 device HD Pro Webcam C920 (046d:082d) Dec 23 14:17:01 OaklandWeather.localdomain kernel: input: HD Pro Webcam C920 as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input29 Dec 23 14:17:01 OaklandWeather.localdomain kernel: usbcore: registered new interface driver uvcvideo Dec 23 14:17:01 OaklandWeather.localdomain kernel: usbcore: registered new interface driver snd-usb-audio Dec 23 14:17:01 OaklandWeather.localdomain mtp-probe[49329]: checking bus 1, device 6: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3" Dec 23 14:17:01 OaklandWeather.localdomain mtp-probe[49329]: bus: 1, device: 6 was not an MTP device Dec 23 14:17:01 OaklandWeather.localdomain systemd[2563]: Reached target Sound Card.
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