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.

  Microbit WebUSB Udev Rule Missing

Status in systemd package in Ubuntu:

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

  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

  Thanks -

  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.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.

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