[SOLVED] Dell 1557 qe/ci not working on internal screen : how to extract locked bios

[jofox78]

Hi , i post here because i cant (for the moment) post in the entire forum.

 

 

1. Great Thanks for bcc9 mucha ,kizwan and the others who have discover the method for qe/ci enabled on mobility 4xxx ati cards, great job

 

2. I have a dell studio 1557, core i7 720qm, mobility radeon hd4570 512 mb, WLED 1920x1080, 4gb ddr3 1333mhz, intel wifi 5300

 

I tried the method of kizwan in : http://www.insanelymac.com/forum/index.php...p;#entry1650842

 

but im not able to get a working graphic, only garbage screen. Ihave a working vanilla osx 10.6.6 installation and have used the kext that kizwan have post (thanks for that, the system's running fine). Modified ATIFramebuffer and the modified bootloader are used

 

Is it possible that my senseid is not the same , because of my internal screen is 1920x1080

But i 'm not able to extract myself the VBIOS of my 4570m 512. Gpu-z refuse to extract the bios and i dont know how to extract the vbios from the motherboard bios (dell 1557 A08).

 

the gpu-z output is :

 

 

http://gpuz.techpowerup.com/11/03/27/8g0.png

 

Anyone can help me ? Especially kizwan , to got my 4570m vbios?

 

Thanks in advance

 

ps excuse me for my very bad english

[jofox78]

All right

, i use everest to extract the vbios, and rename it xxxxx.rom. Back to osx, radeon_bios_decode, and i have what i was searching for.

 

Right, at this time, i have to make my internal lvds (1920x1080) working.

 

in this post, http://www.insanelymac.com/forum/index.php...5308&st=340 , apparently for higher resolution than 1366x768, we need dual link dvi, for that we have to modified bootloader.

See the evolution on the post linked.