Blocking action causes Sway/Wayland UI timeout

[mxmilkiib]

Expected Behavior

That the app should remain running.

Current Behavior

After a time, switching back to the Sway workspace that the app is on causes the app to close.

This is references in these issues;

• https://bugreports.qt.io/browse/QTBUG-66997

Possible Solution

Threading.

Steps to Reproduce (for bugs)

1. Use Sway Wayland compositor
2. Run pavucontrol-qt
3. Use another app on another workspace for a time
4. Switch back to workspace with app

Context

I have to restart the app each time I want to readjust things.

System Information

• Distribution & Version: Arch
• Kernel: stock
• Qt Version: 5.12
• libqtxdg Version: n/a
• lxqt-build-tools Version: latest i guess
• Package version: latest https://www.archlinux.org/packages/community/x86_64/pavucontrol-qt/

[yan12125]

Is there a backtrace for which action is blocking?

I never got crashed pavucontrol on wayfire/weston/kwin. Not sure if it is related to the workspace feature of sway.

[sandsmark]

can you test https://github.com/sandsmark/pavucontrol-qt/ ? I cleaned up the event loop integration there (removed glib). the glib event loop has had problems causing unresponsiveness before (too many events caused some events to not be delivered, e.g. qterminal/konsole/etc. would choke if running something that printed too much).