Parts of old frame visible on new frame [labwc, yocto, iMX8]

[fscheuMoba]

I am on an embedded Linux device (Yocto, iMX8) and using labwc as compositor. When I run wayvnc with the -g option and move the mouse over the mirrored screen, some old mouse positions from the frames before seem freezing and only disappear, when I move the mouse again over this freezed part. It also sometimes happens, that parts of the application stay at the old frame when the application content changes. When I do not use the -g options this does not happen.

• Version:

  • wayvnc: v0.8-dev-5d55944 (master)
  • neatvnc: v0.8-dev-dedac2f (master)
  • aml: v0.3.0-1-gede4249 (master)

• How to reproduce:

  • This is how I run wayvnc: wayvnc 0.0.0.0 -g
  • I tested multiple VNC clients (RealVNC Viewer, TightVNC Viewer, TigerVNC viewer, noVNC) on Windows and Linux but it is the same problem on any client and OS. I also played with different encodings, but this does not change anything

• The problem:

  • In the following gif the -g option is enabled:

  • Without -g flag this does not happen (but the framerate is obviously way lower without graphical acceleration):

[any1]

Are you using etnaviv or the proprietary vivante driver?

Have you tested this on other platforms?

What version of labwc are you using?

[fscheuMoba]

Are you using etnaviv or the proprietary vivante driver?

I am using the vivante driver (version: imx-gpu-viv_6.4.3p4.6).

Have you tested this on other platforms?

I have not tested it on other platforms, yet.

What version of labwc are you using?

labwc version: 0.7.0-83-g722a802

[lexffe]

Can report the same issue but on Fedora Asahi Remix, with swaywm. Only happens on -g.

[any1]

I'm pretty sure that this is a problem with graphics drivers and/or mesa, and not wayvnc.