Black dashed lines across image

[daykin]

Describe the bug
intermittent black 'dashed' lines appear in acquisition

To Reproduce
Begin acquisition on camera with tcam-capture, save image.

Expected behavior
Image appears without artifacts.

Screenshots

computer used (please complete the following information):

• OS: Debian 12
• Architecture/Platform: amd64 Desktop
• DMK 33GX174 (occurs with any camera)
• tiscamera version tcam-ctrl --version
  Versions:
  Tcam: 1.1.1_/rev
  Aravis: unknown_version_external <- libaravis-dev 0.8 from official debian repo
  Modules: gst_aravis_arvu3v_v4l2_libusb_tools

Additional context
I am not sure which layer this problem originates in, perhaps it's an Aravis problem.

[TIS-Stefan]

Hello
We are not sure, what causes these artifacts. But you could try to use a different MTU on the network controller and see, whether the spacing of the dots changes. This may gives a hint for the cause.
I am sorry for guessing.
Stefan

[daykin]

Hi Stefan,
Thanks for your reply. It only occurs on one specific machine, so you might be correct that it has to do with the link layer. I will check and report back.

[daykin]

Yes, that fixed it. Dropping MTU to 1024 and returning it to 1500 made the lines disappear. Thanks for pointing this out!

[TIS-Stefan]

Hello
What happens, if you set the MTU to 9000? Is that at least possible on your computer? It will reduce network traffic.
Stefan

[daykin]

Hi Stefan,

Bumping up to 9000 works just fine, but I am not sure all of our production network infrastructure supports jumbo frames or not. I'd have to check with our IT guy.