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[Help] Thinkpad T540p lock screen and sleep problem

Joined
Nov 21, 2017
Messages
88
Motherboard
thinkpad t540p
CPU
i5-4300M
Graphics
Intel HD 4600
Mobile Phone
Android, iOS
You can check eDP in Winodws (Intel graphics control panel app).
I think eDP machines, especially of your vintage are problematic.
Maybe google will help you.
I installed windows 7 to verify that my machine is only edp
how can I check it in intel control panel







file upload image
 

RehabMan

Moderator
Joined
May 3, 2012
Messages
191,692
Motherboard
Intel DH67BL
CPU
Core i7-2600K
Graphics
Intel HD 3000
Mac
MacBook Air
Mobile Phone
iOS
I installed windows 7 to verify that my machine is only edp
how can I check it in intel control panel







file upload image
There is an option (in Support, I think) to generate a text file. eDP vs. LVDS is in that text file.
 
Joined
Nov 21, 2017
Messages
88
Motherboard
thinkpad t540p
CPU
i5-4300M
Graphics
Intel HD 4600
Mobile Phone
Android, iOS
There is an option (in Support, I think) to generate a text file. eDP vs. LVDS is in that text file.
Ok I found it
As the result
connection type : Embedded Display Port
that means this machine could not get full graphics performance



 
Joined
Nov 21, 2017
Messages
88
Motherboard
thinkpad t540p
CPU
i5-4300M
Graphics
Intel HD 4600
Mobile Phone
Android, iOS
Your ioreg shows backlight control is not implemented.
https://www.tonymacx86.com/threads/guide-laptop-backlight-control-using-applebacklightinjector-kext.218222/

You're also using an ig-platform-id that is for desktops (0x0d220003). Not likely to work very well on a laptop.
I followed your guide,
I can adjust brightness of screen in system ref,

but when lock screen, it turn off and cannot go back to login, sometimes flash screen ( same video in post #1)
logout is ok, the screen is not off
I attached clover folder and ioreg
 

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RehabMan

Moderator
Joined
May 3, 2012
Messages
191,692
Motherboard
Intel DH67BL
CPU
Core i7-2600K
Graphics
Intel HD 3000
Mac
MacBook Air
Mobile Phone
iOS
I followed your guide,
I can adjust brightness of screen in system ref,

but when lock screen, it turn off and cannot go back to login, sometimes flash screen ( same video in post #1)
logout is ok, the screen is not off
I attached clover folder and ioreg
0x0d220003 uses PWMMax=0x1499.
You did not configure for it.
SSDT-PNLF.aml assumes 0x0ad9 for Haswell (assumes ig-platform-id 0xa260006 and others which use 0x0ad9 for PWMMax).
As per brightness guide, must use SSDT-Config.aml and set RMCF.LMAX=0x1499.
 
Joined
Nov 21, 2017
Messages
88
Motherboard
thinkpad t540p
CPU
i5-4300M
Graphics
Intel HD 4600
Mobile Phone
Android, iOS
I modify hotpatch/SSDT-Config.dsl to this:

Code:
        // LMAX: Backlight PWM MAX.  Must match framebuffer in use.

        //

        // Ones: Default will be used (0x710 for Ivy/Sandy, 0xad9 for Haswell/Broadwell)

        // Other values: must match framebuffer

        Name(LMAX, 0x1499)

then rebuild
by ./make,
copy output file SSDT-Config.aml to /EFI/CLOVER/ACPI/patched
then restart
The maximum of brightness bar (in system rf ) is brighter than before (apr 20-25%),
but lock screen no change
still can not bright up again
 

Attachments

RehabMan

Moderator
Joined
May 3, 2012
Messages
191,692
Motherboard
Intel DH67BL
CPU
Core i7-2600K
Graphics
Intel HD 3000
Mac
MacBook Air
Mobile Phone
iOS
I modify hotpatch/SSDT-Config.dsl to this:

Code:
        // LMAX: Backlight PWM MAX.  Must match framebuffer in use.

        //

        // Ones: Default will be used (0x710 for Ivy/Sandy, 0xad9 for Haswell/Broadwell)

        // Other values: must match framebuffer

        Name(LMAX, 0x1499)

then rebuild
by ./make,
copy output file SSDT-Config.aml to /EFI/CLOVER/ACPI/patched
then restart
The maximum of brightness bar (in system rf ) is brighter than before (apr 20-25%),
but lock screen no change
still can not bright up again
MacBookPro11,4 is a poor choice. Should be MacBookPro11,1.
I probably mentioned that before...
 

RehabMan

Moderator
Joined
May 3, 2012
Messages
191,692
Motherboard
Intel DH67BL
CPU
Core i7-2600K
Graphics
Intel HD 3000
Mac
MacBook Air
Mobile Phone
iOS
Joined
Nov 21, 2017
Messages
88
Motherboard
thinkpad t540p
CPU
i5-4300M
Graphics
Intel HD 4600
Mobile Phone
Android, iOS
"Problem Reporting" files are incomplete.
Read FAQ, "Problem Reporting" again. Carefully. Attach all requested files/output.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/
Use the tool mentioned in the FAQ, that way it is less likely you'll omit something.

You will also need to describe the current problem in detail.
I follow this guide https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/
I installed High Sierra to HDD successful.
Then follow this guide https://www.tonymacx86.com/threads/guide-native-power-management-for-laptops.175801/
(to have native power management)

then follow this guide
https://www.tonymacx86.com/threads/guide-laptop-backlight-control-using-applebacklightinjector-kext.218222
(to patch backlight control)

after patch backlight, I can adjust backlight bar in system preference


1) I tried to lock screen (from Apple Menu)
few seconds later, screen switch to black ( backlight still available)
I move the mouse or press any key, there is no change, sometime screen flash light ( check the video attached)
Cannot go back to login screen => have to hard reset machine.

2) when I sleep from system menu, system go to sleep, led power blinking, but cannot wakeup back again, I have to hard reset
 

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