On Mon, Jan 05, 2026 at 04:29:24PM +0100, Ricardo Ribalda wrote: > Hi Ralf > > Thanks for the bisect and the report. > > > The patch to remove noprod parameter has been queued for 6.20 :S so we > should look into a more permanent fix soon. > > When you say zoom, do you mean the desktop version of zoom ( > https://zoom.us/download?os=linux ) or the web version > I would assume that it is the zoom app, that is ignoring the "error" > flag from the frames and showing them to the users. Can you confirm > that? Hopefully we can reach zoom and they can fix it.
Should we revert the nodrop removal in the meantime ? > Now about the error flag. I have given a fast look at your usb trace > and have only seen 4 frames with "error bits" [1]. Can you add more > tracing? > Do something like: > rmmod uvcvideo > modprobe uvcvideo trace=0xffffffff > > Then start zoom, trigger the error and share the content of your > dmesg. It should contain an explanation of why the driver thinks that > the frames are invalid. > > Thanks! > > [1] I used this filter in wireshark: usb.iso.data[1]!=0x0d && > usb.iso.data[1]!=0x0c && usb.iso.data[1]!=0x0f && > usb.iso.data[1]!=0x0e && usb.addr == "3.34.1" -- Regards, Laurent Pinchart
