Fullscreen apps freezes on 2nd monitor about labwc

[IntinteDAO]

wlroots doc says:

WLR_SCENE_DISABLE_DIRECT_SCANOUT: disables direct scan-out for debugging.

https://gitlab.freedesktop.org/wlroots/wlroots/-/blob/master/docs/env_vars.md

EDIT: So run WLR_SCENE_DISABLE_DIRECT_SCANOUT=1 labwc.

Works with this parameter. I wonder if anyone would be able to find the problem in this feature and somehow work around it.

[tokyo4j]

I have a little problem with log, it's very ugly. Maybe someone can give me a command to properly save a log?

Try labwc -d 2> log.txt.

https://github.com/labwc/labwc/blob/master/CONTRIBUTING.md#debug-logs

[IntinteDAO]

log.txt

[tokyo4j]

From the log I guess this has something to do with multi-GPU, but I have no idea about the cause since I know nothing about rendering process of wlroots.

As a workaround, using vulkan renderer by running WLR_RENDERER=vulkan labwc might fix the issue. You need to install vulkan driver for your hardware for that.

[IntinteDAO]

@tokyo4j Doesn't work
log.txt

00:00:08.868 [DEBUG] [types/scene/wlr_scene.c:1709] Direct scan-out enabled

I wonder if it's possible somehow to disable direct scan-out?

[tokyo4j]

wlroots doc says:

WLR_SCENE_DISABLE_DIRECT_SCANOUT: disables direct scan-out for debugging.

https://gitlab.freedesktop.org/wlroots/wlroots/-/blob/master/docs/env_vars.md

EDIT:
So run WLR_SCENE_DISABLE_DIRECT_SCANOUT=1 labwc.

[Consolatis]

This is strange, I'd expect the same to happen on the last sway release.
wlroots has got some bugfixes since 0.17.1 so maybe it is fixed when updating to wlroots 0.17.3?

[droc12345]

Wouldn't hurt to move the wlroots.wrap file from 0.17 to 0.17.3 to pick up backported fixes.

[Consolatis]

Wouldn't hurt to move the wlroots.wrap file from 0.17 to 0.17.3 to pick up backported fixes.

0.17 is actually the branch and includes all fixes from 0.17.3.

[IntinteDAO]

Wouldn't hurt to move the wlroots.wrap file from 0.17 to 0.17.3 to pick up backported fixes.

0.17 is actually the branch and includes all fixes from 0.17.3.

Not sure if it's a best idea, but I install libwlroots from 0.17.3 (Debian Experimental) and nothing. Ofc. this environment variable works (fix this issue)