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Solved > Screen Freeze / black screen after wake

Joined
Jul 29, 2014
Messages
121
Motherboard
GA-Z87X-UD5H
CPU
i7-4770K
Graphics
RX 580
Mac
MacBook, MacBook Air
Classic Mac
PowerBook
Mobile Phone
iOS
Hi,

Yes. This is the correct setting that worked for me. What do you mean by "crash on wake?" The issue I was experiencing was my screen was frozen when the computer woke up. The mouse, keyboard, etc wasn't responding and I had to forcefully power off the machine (through physical power button.) Does your screen appear to be frozen upon waking or is your system actually crashing and showing an error?
Ah, thank you for your reply. I think I'm experiencing something a bit different.

My computer can wake from a short sleep (under 30 seconds). But if it sleeps much longer than that, it doesn't wake up properly. The computer powers up (power button glows, fans start spinning) but the screen remains black. *Often* it's rebooting (with the screen remaining black for all but the last few seconds of the reboot), and I'm usually greeted by a panic report (the last 3 of 3 have all been different).

I really appreciate the reply; it will save me time trying to troubleshoot this as a solution. Instead, it looks like I probably need to look elsewhere.

Thank you!
 
Joined
Sep 13, 2016
Messages
8
Motherboard
H97 D3H
CPU
I5 4590
Graphics
HD4600
me too h97 D3H sleep late wake up then auto reboot
 
Joined
Aug 11, 2016
Messages
1
Motherboard
Gigabyte GA-H270 Gaming 3
CPU
I5-6400
Graphics
MSI radeo RX580
Mac
MacBook Pro, Mac mini
Mobile Phone
iOS
This fix did not work for me. Gigabyte H270 Gaming 3 on Catalina
 
Joined
Jan 13, 2013
Messages
7
Motherboard
ASUS B85M-G
CPU
i5 4440
Graphics
HD 4600
Mac
MacBook Pro
Mobile Phone
iOS
Hi,

Yes. This is the correct setting that worked for me. What do you mean by "crash on wake?" The issue I was experiencing was my screen was frozen when the computer woke up. The mouse, keyboard, etc wasn't responding and I had to forcefully power off the machine (through physical power button.) Does your screen appear to be frozen upon waking or is your system actually crashing and showing an error?
I've been having this exact issue since maybe sierra?? Computer will be sleeping, ill either move mouse of tap a button keyboard, it wakes up and sometimes its back as usual or i just get a black screen i need to forcefully kill power and reboot.
I disabled serial and parallel in bios, still same issue. I have a Asus b85m-g, i5 4440, currently running catalina 10.15.1
My install was clean mojave 10.14.6, upgraded to 10.15.1 and applies multibeast mojave for kext and clover..
Systems runs fine but sometimes i get that black screen.
 
Joined
Dec 2, 2018
Messages
2
CPU
i7-4770
I have the same problem, but I can’t find the Serial Port option in my bios.
ASUS sabertooth z97 mark s
Maybe there is no com port on this motherboard?
 

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Joined
Dec 14, 2019
Messages
1
Motherboard
Gigabyte GA-H77-D3H
CPU
i3-3225
Graphics
HD 4000
Mac
iMac
Mobile Phone
Android
Disabling the serial port worked for me too. Using a Gigabyte GA-h77-D3H motherboard with an I3. I wonder if there is anyone around who can explain why this solves a problem on an external monitor? Does the Imac "think" the display is connected through the serial port? And if so why is this not a problem while booting? I really do not have the faintest clue.
 

Feartech

Moderator
Joined
Aug 3, 2013
Messages
17,952
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
iMac
Mobile Phone
iOS
Disabling the serial port worked for me too. Using a Gigabyte GA-h77-D3H motherboard with an I3. I wonder if there is anyone around who can explain why this solves a problem on an external monitor? Does the Imac "think" the display is connected through the serial port? And if so why is this not a problem while booting? I really do not have the faintest clue.
As per rules, please update your hardware profile to allow others to help you easier
 
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