Windows won't see my a4tech camera12/18/2022 usb 1-1.4.4.4: new high-speed USB device number 9 using xhci_hcd xhci_hcd 0000:01:00.0: ERROR Transfer event for disabled endpoint slot 8 ep 2 usb 1-1.4.4.4: cannot submit urb 0, error -19: no device uvcvideo: Failed to resubmit video URB (-19). usb 1-1.4.4.4: USB disconnect, device number 8 usb 1-1.4.4-port4: disabled by hub (EMI?), re-enabling. retire_capture_urb: 5 callbacks suppressed retire_capture_urb: 2 callbacks suppressed v3d fec00000.v3d: MMU error from client L2T (0) at 0x5641000, pte invalid usbcore: registered new interface driver snd-usb-audio usbcore: registered new interface driver uvcvideo uvcvideo: Found UVC 1.00 device A4tech FHD 1080P PC Camera (09da:2695) usb 1-1.4.4.4: Manufacturer: Sonix Technology Co., Ltd. usb 1-1.4.4.4: Product: A4tech FHD 1080P PC Camera usb 1-1.4.4.4: New USB device strings: Mfr=2, Product=1, SerialNumber=3 usb 1-1.4.4.4: New USB device found, idVendor=09da, idProduct=2695, bcdDevice= 1.00 usb 1-1.4.4.4: new high-speed USB device number 8 using xhci_hcd But that is without doubt the best of several webcams I've tried. I don't understand it: other people have it working with near identical setups yet there's also a lot of evidence from posts in this forum that points to issues with the microphone on the A4Tech. (At other times it hasn't and I've had to do a power shutdown.) things start to deteriorate: cursor becomes sticky/jerky, camera image freezes, then camera cuts out completely and mouse freezes completely.ġ7. Fine: camera starts displaying live image.ġ6. Plug in webcam (to powered hub this time, but have also tried direct to RPi) and grant browser permission to use camera and microphone.ġ5. m#p1809437 - and elsewhere suggest plugging in camera as final step)ġ4. Launch Chrome on RPi, open Zoom invitation email and click on join link.ġ3. Set up Zoom meeting from another desktop (linux) computerġ2. Line shows in test area, but no response to soundsįirst sign of trouble: cursor starts sticking and becomes intermittently unresponsive.Ī4Tech PK-910H is showing as fallback Input - Device Port : Microphoneġ1. When complete, panel on left shows: "Built-in Microphone : None" Hmm!Ĩ. Webcamtest site picks up camera, displays good moving image and begins processing webcam details. Launch Chromium, go to Ĭhrome detects webcam and asks permission. Sudo apt update, sudo apt install pavucontrol pulseaudio-utilsĥ.Launch Device Profiles (from speaker/sound icon, right end of top bar) and setĦ. Sudo apt-get update, sudo apt-get upgrade.Ĥ. Only keyboard, mouse, monitors and ethernet connected.ģ. Install OS on RPi 4B, set new password etc. Flash Raspberry Pi OS (32-bit) Desktop (Recommended) to 128GB Sandisk Ultra micro SD using Raspberry Pi ImagerĢ. Ethernet network connection (wi-fi not configured).ġ. Audio out jack on RPi connected with standard cable to an old pair of powered Labtech desktop speakers. Webcam (A4Tech PK-910H) plugged into the powered USB2 hub on the RPi. Powered USB2 hub to which keyboard and mouse connected. No joy! (And it makes no difference if I boot up with the webcam connected or disconnected.) In desperation, when I read reports of the A4Tech PK-910H being sold by the PiHut and having been tested fairly extensively and "working out of the box" according to many reports, I bought one, wrote a clean image of the latest Raspbian release to a new micro sd card and hoped for the best. In the best case, the camera comes on and a fluid moving image is displayed, but the moment I test the speakers or try to activate the microphone (and I've tried both mic built into webcam and separate usb mic, also using a powered usb hub and plugging directly into the RPi ports) either the desktop freezes or the camera cuts out or both. I've read extensively online and tried various tweaks, all to no avail. For a brief period Google Hangouts worked, but then stopped. I've tried several webcams, several OSs (Raspbian, Ubuntu, Mate) and several platforms (Google Duo, Google Meet, Zoom, Skype) on both Firefox and Chrome. I've spent hours trying to get a functioning video chat setup on a RPi4B (Rev 1.4) using a usb webcam and analogue audio out.
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