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DELL E5440 Brightness ACPIDebug error


msagres

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Try this DSDT.aml

Hervé 's file make both up and down the same value. That is fixed now.

If (LEqual (Arg0, One))
            {
                Notify (LCD, 0x86)
                Notify (^^LPCB.PS2K, 0x0366)
            }
            If (And (Arg0, 0x02))
            {
                Notify (LCD, 0x87)
                Notify (^^LPCB.PS2K, 0x0366)
            }

DSDT.aml.zip

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No worries! You already help me a lot with my kext folder.

 

Jake Lo your DSDT seems to fix the sleep and wake thanks ! I also installed AppleALC it works great with layout-id set to 12. I'm at work I can't test the HDMI audio and the card reader. 

Edit: HDMI and the card reader works fine. Thank a lot!

 

The only bug I noticed is the white noise when I plug my headphone on the jack.

 

I'm also planning to share my EFI folder, to this community. If someone tries to install Catalina maybe it's can help him. So far my experience is great with this laptop and with all yours advises its greater every day. I don't know if I can do this, or where I can.

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Install CodecCommander.kext to /L/E

Repair permissions and rebuild cache.

 

You might still encounter white noise after sleep occasionally, if that's the case install alc_fix. See here for file

ALC292 has been plagued with this issue, so my E7440 also need this same fix. You probably can use my bootpack which is Hotpatched which can work on any BIOS version. 

Your static patched DSDT might cause issue when you change BIOS version. Only thing that might not work is sd card reader which can be easily fix.

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