Contribute
Register

[Help Needed] - High Sierra - Samsung Ultrabook NP530U3B - backlight and memory

Status
Not open for further replies.
RehabMan said:
How are you measuring this relative brightness?
Click to expand...

Eye... on the attached screenshots, you can see the Clover boot screen and also a Windows screen brighter than the other 2 from High Sierra (the brightness bar is on Max)

Clover_screen.jpeg


Windows_screen.jpeg


Highsierra_01.jpeg


HighSierra_02.jpeg


RehabMan said:
You will find your brightness keys are handled in _Q63 and _Q64...
But they may not get called due to your not patching ACPI correctly...
You have no accommodation for _OSI("Darwin")... see ACPI patching guide regarding "OS Check Fix" patches.
https://www.tonymacx86.com/threads/guide-patching-laptop-dsdt-ssdts.152573/
Click to expand...

Sorry my stupid question, I didn't understand when you say that I have no accommodation for _OSI. Is this an error that I made, or my system doesn't support that?

Thanks again
 
GMarrara said:
Eye... on the attached screenshots, you can see the Clover boot screen and also a Windows screen brighter than the other 2 from High Sierra (the brightness bar is on Max)

View attachment 319898

View attachment 319902

View attachment 319900

View attachment 319901
Click to expand...

EDID issue perhaps...??? You seem to be injecting a custom EDID. Make sure it is correct...

Sorry my stupid question, I didn't understand when you say that I have no accommodation for _OSI. Is this an error that I made, or my system doesn't support that?
Click to expand...

No "OS Check Fix" patch applied to your DSDT.
Read the ACPI patching guide.
 
RehabMan said:
EDID issue perhaps...??? You seem to be injecting a custom EDID. Make sure it is correct...
Click to expand...

Sorry again for the stupid question, but would the screen works even if the EDID was incorrect?


RehabMan said:
No "OS Check Fix" patch applied to your DSDT.
Read the ACPI patching guide.
Click to expand...

After this applied, do I have to patch the DSDT again?


I will try to pull the EDID again and confirm. Post the result later tonight.

Thanks,
 
GMarrara said:
Sorry again for the stupid question, but would the screen works even if the EDID was incorrect?
Click to expand...

Yes... It might still work, even if something is wrong with EDID.

After this applied, do I have to patch the DSDT again?
Click to expand...

I don't know what you're asking...
You should clarify your question.
 
Hello RehabMan,

So, I've followed this guide to extract the EDID: EDID injection guide
and the results are still the same. I also tried to work with the machine without injecting the EDID, but in this case the built in screen doesn't work.

I also applied the brightness keys you've mentioned in earlier posts and after that I applied the OS Check Fix (from the MacIASL repo), but still no different results. When I asked if I had to patch the DSDT file again was regarding the OS Fix. Like, do you think would be better to extract a new DSDT file and start over?

Thanks once again.

Regards,

Gustavo
 

Attachments

  • debug_29963.zip
    2.2 MB · Views: 104
  • EFI.zip
    30.2 MB · Views: 168
GMarrara said:
Hello RehabMan,

So, I've followed this guide to extract the EDID: EDID injection guide
and the results are still the same. I also tried to work with the machine without injecting the EDID, but in this case the built in screen doesn't work.

I also applied the brightness keys you've mentioned in earlier posts and after that I applied the OS Check Fix (from the MacIASL repo), but still no different results. When I asked if I had to patch the DSDT file again was regarding the OS Fix. Like, do you think would be better to extract a new DSDT file and start over?

Thanks once again.

Regards,

Gustavo
Click to expand...

As per ioreg, brightness controls look ok.
You need to check your kernel logs to see which keys are used for brightness (older computers may use PS2, not ACPI for such keys).
Samsung computers are known to have issues with the display as they often use eDP. You should check in Windows.
 
Hi RehabMan,
I may try to install Sierra to test.
I read in the past about the Samsung displays... the only that tricks me is that worked really fine on Mavericks and when testing Sierra I had the max peak on the brightness but had no control.

Thanks again for your time on this issue. If I can´t make it work I will post results since it can help others.

Regards,

Gustavo.
 
GMarrara said:
Hi RehabMan,
I may try to install Sierra to test.
I read in the past about the Samsung displays... the only that tricks me is that worked really fine on Mavericks and when testing Sierra I had the max peak on the brightness but had no control.

Thanks again for your time on this issue. If I can´t make it work I will post results since it can help others.

Regards,

Gustavo.
Click to expand...

As I suggested, you should check in Windows to see if your internal display is connected via eDP.
 
RehabMan said:
As I suggested, you should check in Windows to see if your internal display is connected via eDP.
Click to expand...

It's a LVDS connection.

Display_info.jpg
 
Status
Not open for further replies.
Copyright © 2010 - 2024 tonymacx86 LLC
Back
Top