For the iMac I think the relevant bit is Computer Sleep Never.  iTunes is 
always open.   
Many thanks
Severin


> On 18 Feb 2016, at 11:32 AM, Ronda Brown <ro...@mac.com> wrote:
> 
> Hi Severin,
> 
> Deselect 'Put hard disks to sleep when possible'
> 
> I haven't experienced the problem you mention in El Capitan and I use ATV.
> I leave iTunes open (just click red dot)
> Close the lid on my MBP (it then sleeps)
> 
> On my MBP & MBA- In System Preferences > Energy Saver > Power Adapter 
> Computer sleep:  is set at 'Never' (my laptops sleep when I Close the lid)
> Display sleep: 15 min
> 'Put hard disks to sleep when possible' is NOT selected
> 'Wake for Network Access' is selected 
> 
> Cheers,
> Ronni
> 
> Sent from Ronni's iPad4
> 
> On 17 Feb 2016, at 8:39 PM, Severin Crisp <sevcr...@westnet.com.au 
> <mailto:sevcr...@westnet.com.au>> wrote:
> 
>> I regularly use Apple TV with linking to iTunes.   Until recently there has 
>> been no problem and the link to iTunes came up always.   I recently 
>> discovered that it now requires the iMac computer, where iTunes lives, has 
>> to be awake.   This used not to be the case and sleep by the iMac was no 
>> problem.  
>> My Energy Saver in the iMac is set to put hard disks to sleep where 
>> possible, and to wake for network access, and this always used to work.  
>> Currently the computer now has to be awake (the  display can sleep).   I 
>> know that all was well when El Capitan was installed.   
>> Suggestions please.  
>> Severin Crisp
>> ___________________________________________________
>> 
>>              Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
>> 15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
>>                   ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
>>                            mail to: sevcr...@westnet.com.au 
>> <mailto:sevcr...@westnet.com.au>
>> ____________________________________________________
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____________________________________________________

             Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
                  ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
                           mail to: sevcr...@westnet.com.au
____________________________________________________



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