Dell M2800 (like E6540) - need help with dGPU disabled via DSDT for High Sierra

[jonny]

@Jake, this is latest behavior on the M2800. I have it docked on a E-port Plus dock with speakers attached via that.

 

Sound

- sound does not work if use AppleHDA_ALC292.kext. This needs to be removed. Then ...

- internal speaker works

- plugging in speakers to system chassis line-out jack works

- plugging in speakers into E-port Plus dock doesn't work (works in Windows)

 

Sleep

- power button doesn't sleep system, need to hit Fn-F1

- system sleeps, but wakes itself up (without hitting power button ) within 30s to a blank screen and HDD light does a steady ~0.5s flash. macOS is not accessible. Need to hard powerdown the system.

 

LCD Brightness

- system boots up to approx 60% LCD brightness -> need to manually adjust it in System Prefs->Display to 100%

 

Wifi & Bluetooth

- BCM94352 wifi and bluetooth is working

[Jake Lo]

Get rid of AppleHDA_ALC292.kext, bootpack I attached utilizes AppleALC.kext with layoutid=12.

The audio jack on the Edock is known issue. Kext probably does not include patches for E-Docks port. Just have to use the jack on the laptop or request help from InsanelyDeepak.

 

Have you tried sleep / wake without the E-Dock?

Brightness was hardcoded to mid range, if you want full 100%, change Backlightlevel from 0x0306 to 0xFFFF in the Config file

[jonny]

Brightness is now 100%. Thank you. The sleep-wake problem persists, when used in the e-dock or outside the dock.

[Jake Lo]

Please post result of this command

log show --style syslog | fgrep "Wake reason"
 

[jonny]

@Jake, here is the output requested:

 

sh-3.2# log show -style syslog | fgrep "Wake reason"
2018-04-07 15:03:42.985895+1000  localhost kernel[0]: (AppleACPIPlatform) Wake reason: LID0
2018-04-07 15:03:42.985896+1000  localhost kernel[0]: (AppleACPIPlatform) Wake reason: LID0
sh-3.2# 

Thank you for the E-dock explanation. Changed to using VoodooHDA which plays sound fine through the E-dock.

[grahamjg]

@jonnyHave an M2800 trying to put High Sierra on, do you have notes on the path you took including links to resources used? thanks