Bug 296520 - usb/uvideo: glitchy / distorted webcam output using uvideo, but not using webcamd
Summary: usb/uvideo: glitchy / distorted webcam output using uvideo, but not using web...
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: usb (show other bugs)
Version: 16.0-CURRENT
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-usb (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-07-04 17:52 UTC by Adrian Chadd
Modified: 2026-07-06 12:02 UTC (History)
1 user (show)

See Also:

Attachments
uvideo0 kernel dmesg (441 bytes, text/plain)
2026-07-04 17:52 UTC, Adrian Chadd 		no flags Details
usbconfig device descriptor information for the onboard webcam (14.00 KB, text/plain)
2026-07-04 17:53 UTC, Adrian Chadd 		no flags Details
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Description Adrian Chadd freebsd_committer freebsd_triage 2026-07-04 17:52:46 UTC 
Created attachment 272490 [details]
uvideo0 kernel dmesg

I have an old lenovo t420 that just got a -HEAD install. The webcam doesn't work right under uvideo - it's glitchy at higher resolutions and lower resolutions it looks like the pixel config / row config is just plain wrong.

Flipping back to webcamd worked fine.

I've attached the relevant hardware info.
Comment 1 Adrian Chadd freebsd_committer freebsd_triage 2026-07-04 17:53:32 UTC 
Created attachment 272491 [details]
usbconfig device descriptor information for the onboard webcam