Comment 0 for bug 1894424

Very recently my HDMI-->USB video capture device stopped working. /dev/video{0,1} is no longer created so it can no longer be accessed.

The device in question was bought from eBay:
http://web.archive.org/web/20200906083930/https://www.ebay.co.uk/p/15039374404?iid=313155173737
Photo attached, just in case.

linux-image-5.4.0-42-generic works.

linux-image-5.4.0-45-generic fails:

$ lsusb
Bus 002 Device 003: ID 534d:2109

$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
        |__ Port 2: Dev 3, If 0, Class=Video, Driver=snd-usb-audio, 480M
        |__ Port 2: Dev 3, If 1, Class=Video, Driver=snd-usb-audio, 480M
        |__ Port 2: Dev 3, If 2, Class=Audio, Driver=snd-usb-audio, 480M
        |__ Port 2: Dev 3, If 3, Class=Audio, Driver=snd-usb-audio, 480M
        |__ Port 2: Dev 3, If 4, Class=Human Interface Device, Driver=usbhid, 480M
        |__ Port 3: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 4: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 4: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M

Multiple reboots needed to capture data so will update shortly.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.4.0-45-generic 5.4.0-45.49~18.04.2
ProcVersionSignature: Ubuntu 5.4.0-45.49~18.04.2-generic 5.4.55
Uname: Linux 5.4.0-45-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CurrentDesktop: MATE
Date: Sun Sep 6 09:36:32 2020
SourcePackage: linux-signed-hwe-5.4
UpgradeStatus: No upgrade log present (probably fresh install)