[Unsolvable] Black screen when waking from sleep on Mojave 10.14.3, Lenovo G50-80, Broadwell HD 5500

[JackLeeu]

I have tried as above, got a glitch screen on laptop, but well on external screen.

And:

1. Waking from sleep is working on the external screen!!!
2. My laptop's screen still got a black screen with light

It seems we are closing the solution.

 

[JackLeeu]

0x16160002: no glitch, laptop screen cannot wake, the external screen wakes and works normally.

 

[JackLeeu]

Thanks for that advice.

The default resolution of laptop and external screen are both 1920 x 1080, also tried:

1600 x 900
1344 x 756

Nothing changes.

 

[JackLeeu]

I saw this how to distinguish the difference ig-platform-id:

Mobile HD4600 ig-platform-id = 0a26000a?

Mobile HD4600 have been adviced to set ig-platform-id to 0a260006 which is working fine with small glitch on login screen at the first time (if logout or switch user it disappear). I've tried 0a26000a instead and found it flawless without glitchs though it prevented the system from restart. Does...

www.tonymacx86.com

I will try to find the difference between 0x16260006 and 0x16160002 , then report here. It may give advice for better ig-platform-id.

 

[JackLeeu]

Try to deleted the com.apple.PowerManagement files in /Library/Preferences/

Thanks I will try.

 

[JackLeeu]

Delete the com.apple.PowerManagement files, change the display resolution and then reboot make no changes.

 

[JackLeeu]

Try this command line "pmset hibernatemode 25"

Got no change again. I have no idea if we should change ig-platform-id or do something else now.

 

[JackLeeu]

Completet test for darkwake

Thanks again for your help and sorry for my late reply.

Thanks.

I have done some random test, darkwake=1 & darkwake=8 are the same with darkwake=0

darkwake=0 : external screen wakes from sleep and works normally, but laptop's screen shows black screen with light
darkwake=10 : the same with darkwake=0
darkwake=4: the same with darkwake=0
darkwake=3: the same with darkwake=0
darkwake=2: the same with darkwake=0
darkwake=no: the same with darkwake=0 , but got small glitch sometimes

So, in conclusion, the darkwake option has no effect on the black screen problem.

Since the external screen is working normally, I think it's not a problem with my sleep/power management (this is what darkwake cares about), instead it's a problem about my internal screen. This is a display issue.

Thanks again for all your help. Any further advice?

 

[JackLeeu]

Complete test for ig-platform-id

So I have tested all ig-platform-ids suggested for Broadwell at https://www.tonymacx86.com/threads/...ching-using-whatevergreen.256490/post-1780416, here are the results:

0x16160002: current value, have waking from sleep issue for internal screen
0x16260006 : the value used when I post this question, waking from sleep works for the external screen, but cause screen freeze
0x16060000 : tested before, glitch on laptop's screen, waking works on external screen
0x160E0001: boot stuck at IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0
0x161E0001 : boot loop
0x16060002 : boot loop
0x16260002 : the same as 0x16160002
0x16220002 : boot loop
0x162B0002 : the same as 0x16160002
0x16120003 : the same as 0x16160002, but boot slower & wake slower
0x16260005 : the same as 0x16260006

So, in conclusion, the best ig-platform-ids for me are 0x16160002, 0x16260002 , 0x162B0002 and 0x16260005 . But simply changing ig-platform-id won't fix my problem. The issue of waking from sleep causing internal screen black with light is still there

Any further advice? Feel free to let me test, thanks in advance!

 

[JackLeeu]

So I see this on https://www.tonymacx86.com/threads/guide-intel-framebuffer-patching-using-whatevergreen.256490:

- Disabling connectors to enable sleep (framebuffer-pipecount / framebuffer-portcount / framebuffer-conX-type=-1)

We need these fields in config.plist/Devices/Properties/Devices/PciRoot(0)/Pci(0x02,0):

framebuffer-conX-enable (required to enable below)
framebuffer-conX-index
framebuffer-conX-busid
framebuffer-conX-pipe
framebuffer-conX-type
framebuffer-conX-flags

The guide has a demo for Intel HD 5500:

ID: 16160002, STOLEN: 34 MB, FBMEM: 21 MB, VRAM: 1536 MB, Flags: 0x00004B02
TOTAL STOLEN: 35 MB, TOTAL CURSOR: 1 MB (1572864 bytes), MAX STOLEN: 124 MB, MAX OVERALL: 125 MB (131608576 bytes)
GPU Name: Intel HD Graphics 5500
Model Name(s): 
Camelia: V2, Freq: 1388 Hz, FreqMax: 1388 Hz
Mobile: 1, PipeCount: 3, PortCount: 3, FBMemoryCount: 3
[0] busId: 0x00, pipe: 8, type: 0x00000002, flags: 0x00000230 - LVDS
[1] busId: 0x05, pipe: 9, type: 0x00000400, flags: 0x00000507 - DP
[2] busId: 0x04, pipe: 10, type: 0x00000400, flags: 0x00000507 - DP
00000800 02000000 30020000
01050900 00040000 07050000
02040A00 00040000 07050000

Could you explain is this helpful to my issue? Should we try this?