Soundflower prevents screen saver, display and comptuer sleep

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Launching Soundflower, automatically or manually.
2. Using 'pmset -g assertions' in terminal indicates computer and display sleep 
is blocked.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?
Soundflower 1.6.6 on Mountain Lion 10.8.2

Please provide any additional information below.
Following processes named as preventing sleep:

  pid 131(coreaudiod): [0x0000000100000472] 00:08:50 NoIdleSleepAssertion named: "com.apple.audio.'AppleHDAEngineOutputDP:1B,3,1,2:0:{2D4C-091B-5A345242}'.noidlesleep" 

  pid 131(coreaudiod): [0x0000000100000471] 00:08:50 NoIdleSleepAssertion named: "com.apple.audio.'SoundflowerEngine:0'.noidlesleep" 

  pid 131(coreaudiod): [0x0000000500000473] 00:08:50 NoDisplaySleepAssertion named: "com.apple.audio.'AppleHDAEngineOutputDP:1B,3,1,2:0:{2D4C-091B-5A345242}'.nodisplaysleep"

Original issue reported on code.google.com by btoder...@gmail.com on 1 Dec 2012 at 9:45

[GoogleCodeExporter]

I have the same problem.

Original comment by videlapa...@gmail.com on 8 Feb 2013 at 7:21

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[GoogleCodeExporter]

I also have the same issue

Original comment by t...@tonyward.me on 5 Apr 2013 at 7:40

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[GoogleCodeExporter]

Bump. I'm having the same issue with the same culprit processes from pmset -g 
assertions.

Original comment by mark.ped...@gmail.com on 24 Jun 2013 at 8:42

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[GoogleCodeExporter]

Same problem here on OS X 10.8.4.

Hot corners still work, but the automatic sleep or automatic screensaver 
doesn't work anymore.

Original comment by lee.chis...@gmail.com on 7 Jul 2013 at 4:01

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[GoogleCodeExporter]

Same issue. Maybe a work around is to set soundflowerbed to end after a certain 
period of inactivity then everything should go back to normal. A bit ridiculous 
if you are using thunderbolt to DP monitor with speaker out running through DP. 
If I forget, the monitor could burn. 

Original comment by VanSant....@gmail.com on 7 Jul 2013 at 6:19

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[GoogleCodeExporter]

I have the same problem.

Original comment by hap8...@gmail.com on 13 Jul 2013 at 1:59

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[GoogleCodeExporter]

i have same issue

Original comment by phuongph...@gmail.com on 17 Jul 2013 at 2:26

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[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I observed the same issue with Mountain Lion. 
Soundflowerbed is preventing display sleep when output device != None. 

The only solution is to select "None" output, or to quit Soundflowerbed

Original comment by guido.av...@gmail.com on 28 Oct 2013 at 1:04

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[GoogleCodeExporter]

Same problem for me, Mavericks 10.9.4, 6 month again and no solutions?

Original comment by ver...@gmail.com on 28 Jul 2014 at 8:13

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[GoogleCodeExporter]

Just got a new DP monitor yesterday and discovered soundflower as the way to 
manage volume.  Unfortunately kills screen saver.  I will have to uninstall and 
find another solution.

Original comment by alangst...@gmail.com on 1 Aug 2014 at 5:29

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[GoogleCodeExporter]

Hello,

I am finding soundflower very useful since allows me to control the volume 
through HDMI, however I noticed that when soundflower is running, it prevents 
the computer from sleeping. By running pmset -g on terminal, I found that the 
process "coreaudiodo" is what prevents the mac from sleeping. The only way to 
stop that process from preventing sleep is to quit soundflower. Is this 
something that can be addressed in future updates? This forced me to uninstall 
the software since it is overworking my laptop causing it to overheat.

Thank you,

Original comment by cabellor...@gmail.com on 4 Dec 2014 at 2:00

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[pawelad]

I can confirm that this is still happening.

[maximus12793]

same issue. is the maintainer no longer active? Last commit was 2010

[bgizdov]

same issue here...

[pawelad]

No, I don't think this is still maintained.

FWIW, I tracked the issue to an underlying OS X process that disables screen sleeping (I don't remember the specific now) if display speakers are used - the behaviour is fixed when you change the source output to internal speakers, and it's also broken when you go directly to your monitor (without Soundflower) which kinda makes it an OS X issue and not a Soundflower issue.

[catchdave]

@pawelad: I disagree that it's an OSX issue. Coreaudiod will prevent sleep while audio is playing on HDMI (which while annoying makes sense since that may stop audio on an external monitor). The issue is that soundflower maintains an open audio channel--even when no audio is play. If soundflowerbed closed the channel when there's no input, coreaudio will see that there's no audio and allow sleep/screensaver.