Hi Dan, That is correct, on 19.10 and I believe 19.04 (but I haven't double tested with 04) the device works without any custom udev rules. But on 20.04 it does.
I removed the custom udev rule from my 20.04 system and plugged in the microbit and confirmed it does no longer show. Then took output from the commands you requested. I'm guessing that it looks like on my laptop it is changing one of the virtual devices and showing with plugdev against one for that device. On my desktop it's not. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1876831 Title: Microbit WebUSB Udev Rule Missing Status in systemd package in Ubuntu: Incomplete Bug description: Expected Result: Micro:Bit shows under Web USB devices in chrome as in 19.10 What happened: Micro:bit does not show under Web USB Devices unless Udev rules are added. I re-installed my computer recently to 20.04 as my SSD Died around the time it came out so decided to use it as a chance to upgrade at the same time. I noticed when trying to use the WebUSB Feature of the Micro:bit it was no longer detected by chrome (not via the snap and was direct deb) and to confirm this issue I tried on my Ubuntu 19.10 laptop and it detected the micro:bit via webusb no issue. After looking around I added the Udev rule from the microbit site at https://support.microbit.org/support/solutions/articles/19000105428 -webusb-troubleshooting#Linux and it did start to work under 20.04. I would call this a bug, as for many users going from where it's working on one version to not on another I suspect I won't be the only user wondering why it isn't working. If it is where Ubuntu 19.10 and 19.04 (and maybe even earlier) worked then I wouldn't be opening this bug. Thanks - Ryan ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: udev 245.4-4ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30 Uname: Linux 5.4.0-28-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: Unity:Unity7:ubuntu CustomUdevRuleFiles: 50-microbit.rules 60-brother-libsane-type1-inst.rules .50-microbit.rules.swp 70-snap.snapd.rules Date: Tue May 5 00:13:23 2020 InstallationDate: Installed on 2020-04-26 (8 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: Gigabyte Technology Co., Ltd. B450 AORUS M ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-generic root=UUID=f28437b5-488a-45d8-b5e1-5e26fb587038 ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/08/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F2 dmi.board.asset.tag: Default string dmi.board.name: B450 AORUS M dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF2:bd08/08/2018:svnGigabyteTechnologyCo.,Ltd.:pnB450AORUSM:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450AORUSM:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: Default string dmi.product.name: B450 AORUS M dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1876831/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp