Mir

Bug #1292306
Comment #8

Comment 8 for bug 1292306

Revision history for this message

Michał Sawicz (saviq) wrote on 2014-03-20: Re: Upon upgrading to Qt5.2 the music app no longer plays the next song if the screen is off

Mir binaries hacked to allow compositing with screen off Edit (9.7 MiB, application/x-tar)

Here goes: lp:~albaguirre/mir/test-hack-consume-buffers-display-off hacks in a way that lets apps render even though screen is off. Attached are armhf binaries with a script to push it to device (thanks AlbertA!).

tail -f /var/log/lightdm/unity-system-compositor.log will show you that composition happens every second (when app updates the time counter) even when screen is off.

This makes the app continue to next song on the playlist, as well as handle volume keys when screen is off.

This means that indeed Qt changed something that makes the events not go around when it can't render frames. Next step would be to find if that is the designed behaviour and why not, and how to fix it.