Bug 287580

Summary:	Media Players stop playing when monitor enters power saving mode (dpms off)
Product:	[Unmaintained] solid	Reporter:	Nikola Schnelle <n.schnelle>
Component:	powermanagement	Assignee:	Dario Freddi <drf>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	jacopo188, pablow.1422
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Nikola Schnelle 2011-11-25 22:50:13 UTC

Version:           unspecified (using KDE 4.7.3) 
OS:                Linux

Clementine/amarok stop playing music when monitor goes to dpms off. 

1) This only happens when I use opensorce ati driver and powerdevil.

2) This does not happen when fglrx is used.
3) This does not happen when opensource ati and xfce4-power-manager is used.

More people affected: http://ubuntuforums.org/showthread.php?t=1848987 

Reproducible: Always

Steps to Reproduce:
Play songs with Clementine. Then let monitor to go to dpms off state. After playing one or few songs, playback stops. Move mouse cursor, monitor turns on and playback immediately continues (clementine continues to play where it stopped).

Actual Results:  
Clementine stopped playing while monitor was in dpms off state.

Expected Results:  
Clementine playing all the time.

Comment 1 Dario Freddi 2011-11-25 23:25:48 UTC

The power management system itself does not do anything which affects other applications when reaching an idle state - it would be cool to check with Clementine developers why this happens and if they have an idea. Can you reproduce the issue with other media players? Otherwise I'd say the issue should be researched in Clementine first.

Comment 2 Pablo 2012-01-22 04:44:11 UTC

I'm having that problem too. Using Fedora 16, KDE 4.7.4, and the issue presents in both: Amarok and Clementine. Sorry my bad english.

Comment 3 Pablo 2012-03-06 19:15:03 UTC

Is there any aditional info wich is needed for this bug?

Comment 4 Jack Lilhammers 2012-04-29 22:11:20 UTC

Kubuntu 12.04 amd64, ati open driver (and i can't switch to fglrx).
any player i've the same problem.

i read that a guy set "dim display" and "screen energy saving" to 360min, but this is just a workaround...

Comment 5 Nikola Schnelle 2012-05-11 08:42:23 UTC

I filed a bug against radeon driver: https://bugs.freedesktop.org/show_bug.cgi?id=49761

Comment 6 Pablo 2012-06-08 12:46:19 UTC

This only happens with kwin effects set to opengl. With Xrender, this problem doesn't present.

Comment 7 Nikola Schnelle 2012-06-08 14:26:24 UTC

This is bug in opensource radeon driver and it is fixed now: https://bugs.freedesktop.org/show_bug.cgi?id=49761

Build and install newest xserver-xorg-video-ati driver from git to get the fix.

If you are using Kubuntu 12.04 you can install newest drivers from oibaf ppa:
sudo apt-add-repository ppa:oibaf/graphics-drivers
sudo apt-get update
sudo apt-get dist-upgrade

and then reboot your system.