Thanks for the glue. It does affect userspace apps. For applications use udev, they will detect extra device number rather than expected number.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1832239 Title: cosmic kernel (and above) provides two /dev/videoX device but there should be only one video device physically Status in linux package in Ubuntu: Confirmed Bug description: Since cosmic kernel (4.18) and above, I am aware that there will be two /dev/videoX even there is only one device physically. This issue could be found in many hardware platforms[1] [Steps to Reproduce] 1. Install Ubuntu desktop image (cosmic or above) on one of the platforms[1] 2. Check /dev/video* [Expected Result] There is only /dev/video0 because there is only one video device (the default webcam). [Actual Result] Both of /dev/video0 and /dev/video1 are shown. [1] The platforms have this issue: Dell Vostro 5568 Dell OptiPlex 3011 All In One Dell Computer Corporation XPS 15 9550 Dell Latitude E5570 Dell Vostro 3459 Dell Vostro 3559 Lenovo ThinkCentre Edge 62z All In One ------------------------------------------------------------------------- ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-21-generic 4.18.0-21.22 ProcVersionSignature: Ubuntu 4.18.0-21.22-generic 4.18.20 Uname: Linux 4.18.0-21-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1388 F.... pulseaudio Date: Mon Jun 10 11:20:43 2019 InstallationDate: Installed on 2018-11-23 (199 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: Dell Inc. Vostro 5568 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-21-generic root=UUID=89c301bf-b96d-44b3-890f-71987524c021 ro RelatedPackageVersions: linux-restricted-modules-4.18.0-21-generic N/A linux-backports-modules-4.18.0-21-generic N/A linux-firmware 1.175 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/18/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.1 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.0.1:bd07/18/2016:svnDellInc.:pnVostro5568:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Vostro 5568 dmi.product.sku: 0786 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832239/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp