flutter / flutter/devtools

Cannot open Timeline Events page on Windows

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#6,887 4 comments 12 reactions 0 assignees View on GitHub
bug P2 performance > perfetto screen: performance
Dominant language
Dart
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Merged PRs (30d)
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Description

I'd like to profile my Windows application from VS Code using Devtools' Performance view.

Whenever I select the page, I get a popup with the following error:
Oops, something went wrong. Please file a bug.

To assist with debugging please attach or link to the trace you were viewing.

Viewed on: http://127.0.0.1:9100

SecurityError: Failed to execute 'getDevices' on 'USB': Access to the feature "usb" is disallowed by permissions policy.
Error: Failed to execute 'getDevices' on 'USB': Access to the feature "usb" is disallowed by permissions policy.
at AdbOverWebUsb. (http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:290487:40)
at Generator.next ()
at http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:156:71
at new Promise ()
at Object.__awaiter (http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:152:12)
at AdbOverWebUsb.getPairedDevices (http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:290485:26)
at http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:310036:59
at Generator.next ()
at http://127.0.0.1:9100/assets/packages/perfetto_ui_compiled/dist/v33.0-1838a06af/frontend_bundle.js:156:71
at new Promise ()

v33.0-1838a06af 1838a06af94f1b9897907d168408f399e23fbc18
UA: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Code/1.84.2 Chrome/114.0.5735.289 Electron/25.9.2 Safari/537.36

flutter doctor output:
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.16.2, on Microsoft Windows [Version 10.0.19045.3570], locale de-DE)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Visual Studio - develop Windows apps (Visual Studio Professional 2022 17.8.2)
[√] VS Code (version 1.84.2)
[√] Connected device (1 available)
[√] Network resources

• No issues found!

The weird thing here is that this seems to be an error coming from android support, but I have completely disabled android via
`flutter config --no-enable-android` in this environment.

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