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Toshiba satellite u840w ultrabook 14" 21:9" El Capitan


cooper1

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Well, if layout-id 01660009 is the only one that seems to give your graphics acceleration, I guess that's what you should stick with. Regarding black screen on wake, you could try and use boot option darkwake=0 to see if it makes any difference.

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ok some interesting things with oxxx9 i have graphics normal but with -v i have same errors IOGraphics flags 0x43 and interfacesnapshot missing .This is my original DSDT and SSDT without any pacth You can throw them a glance ?

u840w.rar

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ok understood .also to sleep with this command (darkwake=0 ,1,2 etc) not change anything. The problem is computer take to sleep and open again fast with dark screen, cnt take to sleep over 1 second..............

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Ha, that's different from the description you gave before. I understood your laptop went to sleep Ok but just woke to dark screen. Assuming you configured hibernation mode to 0, what you'll probably need here is a DSDT patch...
 
None of your EHCx/XHC USB devices or HDEF audio device appear to have the (usually) required _DSM method:

           Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
           {
                If (LEqual (Arg2, Zero))
                {
                    Return (Buffer (One)
                    {
                         0x03                                           
                    })
                }
                Return (Package (0x0B)
                {
                    "AAPL,current-available", 
                    0x0834, 
                    "AAPL,current-extra", 
                    0x0898, 
                    "AAPL,current-extra-in-sleep", 
                    0x0640, 
                    "AAPL,max-port-current-in-sleep", 
                    0x0834, 
                    "AAPL,device-internal", 
                    0x02, 
                    Buffer (One)
                    {
                         0x00                                           
                    }
                })
            }

Try either of the attached patched DSDT tables. The 1st one includes the above patch in EHCx, XHC and HDEF devices; the 2nd one has same + _PWR methods removed.

DSDT01.aml.zip

DSDT02.aml.zip

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Herve thank you very much , with your DSDT i have sleep ok but on wake up but :

 

1. i have dark screen ( yes i know is a graphics id ) my laptop boot normal with out put any id ????????????? with id 0xxx3 or 0xxxx4 i dont have QE/CI & only 5mb VRAM

 

2.MaciASL cn't open your dsdt 

 

I am disappointed .... maybe blame the odd screen resolution (1792χ768)

 

to do something wrong ...... I will continue the efforts and let you know

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