Dell Inspiron 5448

[Bronxteck]

did you try setting PM in terminal to mode 0?

sudo pmset hibernatemode 0 

it is usually set to 3 by default

[Hafaisy]

Still not work. If i restart, it will boot into the same thing. And now my fan is spinning always.

[Bronxteck]

that should not affect your fans. you might be having other issues like dust clogging your heat sink fan or maybe need fresh thermal paste

[Piranha]

I got it worked, but now facing problem on sleep sometimes not work and not fully turned off when shutting down. Sometimes when i turn it on, it post to the ePSA Pre Boot Assessment. So what is the problem? 

 

 

Mine does this as well about every other time on startup, it will go into EPSA. It never finds an issue, I just restart and everything works like normal. Mine is a Dell 7347,i5,4400,dw1560,8gb, 256ssd evo/samsung, Clover, Uefi,10.11.6,patched dsdt,ssdt etc  I know another person who has the same issue. Neither one of us has figured out how to stop it, other than that 100% working EL Cap. Anyone ? 

[Piranha]

regarding your sleep issues : 
sudo pmset hibernatemode 0
sudo rm -f /var/vm/sleepimage
sudo pmset hibernatefile /dev/null
 
This one cleared up most of my sleep issues:
sudo pmset -a standby 0 && sudo pmset -a autopoweroff 0
 
this will show your current settings:
pmset -g
 
or
pmset -g assertions
 
Also I've heard of setting    darkwake=1      helps for some issues as well with sleep.
This is a boot arg set in your config.plist / via clover or manually
 

[Hervé]

Maybe something similar to the old RTC issue which reset CMOS. Try and look for the El Capitan RTC patch (DSDT and/or AppleRTc kext).