I have a big problem to get my internal lcd working. when it want load desktop i get a blackscreen.
Strange thing is, that with external monitor via vga output connected i get no blackscreen and everything works fine. it looks like it can not find the internal lcd and switches automaticly to vga output. Im using dsdt.
no only external monitor gets picture, laptop lcd is always black(after the applebootlogo).
you are my last hope, when you dont know how this can be fixed, I will cancel my project as i have no ideas anymore... . I would love to have snow leopard on my laptop but i worked now 3 weeks on it and i have no power anymore for this.
I just talked with EVOSX86 Team and they say for sure it should be a nvcap Problem. I think they are right because I also tested all enablers like: NVenabler, Natit, NVinject, NVkush, corevidia And everyone is giving the same result: blackscreen. A program like nvcap analyzer would be great that is testing every possibility every 3 sec until you are not seeing a blackscreen anymore and can stop and save nvcap for internal display, and then when you have no output for vga or hdmi, etc. you can check with the same method like i explained with internal display. That would be a great program. I found out that the Geforce 9300M G chip is not a real Geforce 9300M G. It is a GeForce 8400M G with some improvements. I can see that also in my bios, it has information about two videocards in it. Geforce 9300M G and Geforce 8400M G. It seems that they are working together and maybe that is the problem why I cant find a working nvcap for me. Is there a way to look up nvcap information in windows or linux ? Can you help me to analyze how my nvcap should look like? with best wishes, hectorox
Here is some useful info on Nvcap. At the bottom you will see some info relating to laptops:
dual DVI cards :
04000000 00000300 0c000000 00000000 00000000 --> disabling 5th position, no TV output. 04000000 00001300 0c000000 00000000 00000000 --> 5th position for TV out set on channel 1, TV out available when no other display is connected on channel 1. 04000000 00000300 1c000000 00000000 00000000 --> 5th position for TV out set on channel 2, TV out available when no other display is connected on channel 2.
DVI + VGA cards :
04000000 00000100 06000000 00000000 00000000 --> disabling 4th position, no TV output, only 1 output on channel 1 and DVI + VGA on channel 2 04000000 00000300 04000000 00000000 00000000 --> disabling 4th position, no TV output, only 1 output on channel 2 and DVI + VGA on channel 1 04000000 00000300 0e000000 00000000 00000000 --> VGA only on channel 1, 4th position for TV out set on channel 2, TV out available when no other display is connected on channel 2. 04000000 00000900 06000000 00000000 00000000 --> VGA only on channel 1, 4th position for TV out set on channel 1, TV out available when no other display is connected on channel 1 (DVI + VGA on channel 2 using position 2 and 3, bitmap 0 1 1 0)
Laptops usually have first channel using only 1 output for internal panel, on position 1, and depending on how many other outputs are available, second channel can use positions 2, 3, and 4 : 04000000 00000100 02000000 00000000 00000000 04000000 00000100 06000000 00000000 00000000 04000000 00000100 0e000000 00000000 00000000
There are probably many more combinations, but the above would be a good place to start!
So, 2 years has passed and the blackscreen issue is still existing... .
In these 2 years I have started a lot of retries to solve this problem, but all with no success, however I know what the problem is: The Problem is from the beginning not the graphiccard, the graphiccard is working fine with every outputs like hdmi and vga, QE/CI. It is the lcd-panel itself that osx cant recognize, probably because Apple never supported/used a lcd panel like mine.
Apple uses for there macbooks lcd panels from: LP = LG Phillips B = AU Optronics LTN = Samsung CMO = Chei Mei
My lcd panel is a Toshiba Matsunutsa model LTD121EXSS. One try would be to find another lcd panel from the manufacturers above that fits to your laptop. Unlucky for me because the LTD121EXSS has a different connector(mini coaxial 30pin) then the others so there is really no chance to get this somehow working... .
Im still hoping that maybe apple will do better lcd recognizing in the future. I have tried the new Nvidia drivers for Mac osx 10.8.2 but the problem is still existing.
I hope this information can help someone for better understanding about the blackscreen issue.