bpedman Posted June 12, 2012 Share Posted June 12, 2012 So, I have got my E6520 working pretty well. The one thing that is keeping me from really making it my main OS is sleep. It feels like I just need to modify a few lines in the DSDT to get it working but I am not sure what method to look at and play around with. Here is what happens when I hit sleep: - Screen goes black - Wifi indicator light goes off (internal wifi isn't actually working, the light is just on and I notice it turns off) - my USB wifi dongle turns off - Hard drive is active for a few seconds and then it stops So it seems like most everything is shut down properly but just doesn't go to sleep - The keyboard backlight is still on - The light on the power button is still on - and the CPU starts getting extremely hot (maybe the fans are off too? or maybe just the speedstep?) Now, here is the thing that makes me think this should be a fairly simple fix. I was doing my own DSDT editing/patching and I had most things working when I tested shutdown and shutdown had the EXACT same symptoms until I applied a very simple patch. My _PST method looked like this when it did not shutdown properly: Method (_PTS, 1, NotSerialized) { If (LEqual (Arg0, 0x05)) { } Else { APTS (Arg0) EV5 (Arg0, Zero) } } There was no action in the if clause. I then modified it according to another DSDT I found and now it looks like this: Method (_PTS, 1, NotSerialized) { If (LEqual (Arg0, 0x05)) { Store (Zero, SLPE) Sleep (0x10) } Else { APTS (Arg0) EV5 (Arg0, Zero) } } 2 lines added to the if clause and shutdown now works properly....so my question is, where do I need to start looking to add something similar so sleep will work? Thanks Link to comment Share on other sites More sharing options...
Administrators Syonagar Posted June 12, 2012 Administrators Share Posted June 12, 2012 Dear bped, Give it a try and let us know how it went Cheers! Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted June 12, 2012 Administrators Share Posted June 12, 2012 sleep is a very fussy thing, it is dependent of every thing in the laptop like usb ports , lan/wifi and hardware in dsdt, have you tried with null cpu and sleep enabler kext's? Link to comment Share on other sites More sharing options...
bpedman Posted June 12, 2012 Author Share Posted June 12, 2012 sleep is a very fussy thing, it is dependent of every thing in the laptop like usb ports , lan/wifi and hardware in dsdt, have you tried with null cpu and sleep enabler kext's? No, that is kind of my last resort. I would like to be able to have it work without those (since currently I don't need null cpu) Link to comment Share on other sites More sharing options...
bpedman Posted June 13, 2012 Author Share Posted June 13, 2012 Just doing some research...thought I would update about what I am learning...I am starting to read through the ACPI specification (wish I understood it all) and I am realizing that there is another piece to this puzzle that makes the shutdown work properly and that is a little section I happened to have at the bottom of my DSDT that looks like this: OperationRegion (PMRS, SystemIO, 0x0430, One) Field (PMRS, ByteAcc, NoLock, Preserve) { , 4, SLPE, 1 } This is basically marking a register in the system with a name (SLPE). This register/bit is used in the _PTS method (prepare to sleep, which is called by shutdown as well apparently) and stores a value in this register (Zero)....I think I am going to attempt to store a One there and see what happens...hopefully it doesn't hose my machine Link to comment Share on other sites More sharing options...
bpedman Posted June 13, 2012 Author Share Posted June 13, 2012 Didn't work...thought that would be too easy Link to comment Share on other sites More sharing options...
trama Posted March 18, 2013 Share Posted March 18, 2013 Hi, I am trying to get sleep working too... but no luck for now! Could you please share your DSDT? Which is your configuration and relevant kexts? Federico Link to comment Share on other sites More sharing options...
bpedman Posted March 22, 2013 Author Share Posted March 22, 2013 Hi, I am trying to get sleep working too... but no luck for now! Could you please share your DSDT? Which is your configuration and relevant kexts? Federico I tried but could never get this working...then my laptop died and haven't gotten OSX back on it. I do have all my files I was working with though including a number of different DSDTs I tried out. Attached is a folder I kept everything in. Take a look. I can't remember which DSDTs worked and which ones didn't, so use at your own risk. OSX-Stuff.zip Link to comment Share on other sites More sharing options...
tarfoh Posted October 18, 2013 Share Posted October 18, 2013 I have sleep working on my E6520 w/ Optimus. 10.9 DP8. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted October 18, 2013 Administrators Share Posted October 18, 2013 It would be helpful to indicate whether sleep is natively working under Mav DP8 or if you had to do something about it. Can you please be a little more specific? Link to comment Share on other sites More sharing options...
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