Crashing While Streaming to Apple TV

[rayward]

My iMac, running Yosemite, crashes when streaming movies to my iMac. Sometimes it just stops responding - it looks like its working because you can move the mouse and select windows, but the applications are not responding. Sometimes is crashes to the white screen of death.

While it's doing other things, it won't crash but, once it's left alone just to stream, it'll last maybe half an hour and then quietly crash. The first sign of which is the movie I'm watching stops.

I have tried resetting the NVRAM, no change.

Any ideas?

TIA

 

[rayward]

A new behavior is occurring now: the white screen of death now has a small, grey, circle with a line through it (think Ghostbusters' logo) in the middle of the screen.

 

[CoastalOR]

My iMac, running Yosemite, crashes when streaming movies to my iMac. Sometimes it just stops responding - it looks like its working because you can move the mouse and select windows, but the applications are not responding. Sometimes is crashes to the white screen of death.
While it's doing other things, it won't crash but, once it's left alone just to stream, it'll last maybe half an hour and then quietly crash. The first sign of which is the movie I'm watching stops.
I have tried resetting the NVRAM, no change.
Any ideas?
TIA

Please provide a little more information.
Did you mean streaming iMac to AppleTV or are you also streaming iMac to iMac?
What model iMac?
What version of Yosemite?
Does the iMac, that has the circle with a line through it, have a after market SSD in it with TRIM enabled?

 

[rayward]

Please provide a little more information.
Did you mean streaming iMac to AppleTV or are you also streaming iMac to iMac?
What model iMac?
What version of Yosemite?
Does the iMac, that has the circle with a line through it, have a after market SSD in it with TRIM enabled?

Streaming iMac to Apple TVs (one via ethernet, one via wifi, using AEBS router). iMac details in my signature, running fully up-to-date Yosemite. Yes, the SSD is aftermarket.

FYI, I have fixed the issue temporarily, by setting the processor to never sleep. No crashes since. TBH, I can live with this if there's no easy fix available.

Thanks!