xwayland has no default cursor

[lilydjwg]

Describe the bug Recently I observe that the default mouse cursor in xwayland applications failed load.

To Reproduce Steps to reproduce the behavior:

1. Run xev
2. Move mouse cursor on its window
3. The mouse cursor is invisible. The wlr_xcursor_manager_get_xcursor fails for some reason
4. xsetroot -cursor_name left_ptr fixes it

Expected behavior The default cursor should be set.

Screenshots or stacktrace

Wayfire version git

cursor theme is Vanilla-DMZ and size 16, output scale=2.

[ammen99]

I am not sure, what is Wayfire supposed to do to fix this? I have no idea what Xwayland needs, I thought we only need to set the XCURSOR_THEME env var.

[lilydjwg]

It seems that wlr_xcursor_manager_load needs to be called somewhere after wlr_xcursor_manager_create. But it has a scale parameter that I don't know where to get. Setting it to 1 I get a blurry cursor on my scale=2 output.

[killown]

Cannot reproduce this issue:

https://github.com/user-attachments/assets/2514568c-07a2-49f8-8073-72b8d4386a4c

[lilydjwg]

I retested with two fresh users, and find that the issue occurs when the output scale=2 when wayfire starts. It doesn't happen when the output scale=1 when wayfire starts.

[killown]

https://github.com/user-attachments/assets/1f1443d1-b839-4672-9aff-ac9d5f0a9da5

[lilydjwg]

It happens when the output scale=2 when wayfire starts. Reloading from scale=1 to 2 doesn't reproduce this issue.